# Character

public final class **Character** extends [Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html)  
implements [Serializable](https://developers.google.com/j2objc/javadoc/jre/reference/java/io/Serializable.html) [Comparable](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Comparable.html)\<[Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html)\> The `Character` class wraps a value of the primitive
type `char` in an object. An object of type
`Character` contains a single field whose type is
`char`.


In addition, this class provides several methods for determining
a character's category (lowercase letter, digit, etc.) and for converting
characters from uppercase to lowercase and vice versa.


Character information is based on the Unicode Standard, version 6.2.0.


The methods and data of class `Character` are defined by
the information in the *UnicodeData* file that is part of the
Unicode Character Database maintained by the Unicode
Consortium. This file specifies various properties including name
and general category for every defined Unicode code point or
character range.


The file and its description are available from the Unicode Consortium at:

- <http://www.unicode.org>

### Unicode Character Representations

The `char` data type (and therefore the value that a
`Character` object encapsulates) are based on the
original Unicode specification, which defined characters as
fixed-width 16-bit entities. The Unicode Standard has since been
changed to allow for characters whose representation requires more
than 16 bits. The range of legal *code point* s is now
U+0000 to U+10FFFF, known as *Unicode scalar value* .
(Refer to the [* definition*](http://www.unicode.org/reports/tr27/#notation) of the U+*n* notation in the Unicode
Standard.)

The set of characters from U+0000 to U+FFFF is
sometimes referred to as the *Basic Multilingual Plane (BMP)* .
Characters whose code points are greater
than U+FFFF are called *supplementary character* s. The Java
platform uses the UTF-16 representation in `char` arrays and
in the `String` and `StringBuffer` classes. In
this representation, supplementary characters are represented as a pair
of `char` values, the first from the *high-surrogates*
range, (\\uD800-\\uDBFF), the second from the
*low-surrogates* range (\\uDC00-\\uDFFF).

A `char` value, therefore, represents Basic
Multilingual Plane (BMP) code points, including the surrogate
code points, or code units of the UTF-16 encoding. An
`int` value represents all Unicode code points,
including supplementary code points. The lower (least significant)
21 bits of `int` are used to represent Unicode code
points and the upper (most significant) 11 bits must be zero.
Unless otherwise specified, the behavior with respect to
supplementary characters and surrogate `char` values is
as follows:

- The methods that only accept a `char` value cannot support supplementary characters. They treat `char` values from the surrogate ranges as undefined characters. For example, `Character.isLetter('\uD840')` returns `false`, even though this specific value if followed by any low-surrogate value in a string would represent a letter.
- The methods that accept an `int` value support all Unicode characters, including supplementary characters. For example, `Character.isLetter(0x2F81A)` returns `true` because the code point value represents a letter (a CJK ideograph).

In the Java SE API documentation, *Unicode code point* is
used for character values in the range between U+0000 and U+10FFFF,
and *Unicode code unit* is used for 16-bit
`char` values that are code units of the *UTF-16*
encoding. For more information on Unicode terminology, refer to the
[Unicode Glossary](http://www.unicode.org/glossary/).

### Nested Class Summary

|---|---|---|---|
| class | [Character.Subset](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.Subset.html) || Instances of this class represent particular subsets of the Unicode character set. |
| class | [Character.UnicodeBlock](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.UnicodeBlock.html) || A family of character subsets representing the character blocks in the Unicode specification. |
| enum | [Character.UnicodeScript](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.UnicodeScript.html) || A family of character subsets representing the character scripts defined in the [*Unicode Standard Annex #24: Script Names*](http://www.unicode.org/reports/tr24/). |

### Constant Summary

|---|---|---|
| int | [BYTES](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#BYTES) | The number of bytes used to represent a `char` value in unsigned binary form. |
| byte | [COMBINING_SPACING_MARK](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#COMBINING_SPACING_MARK) | General category "Mc" in the Unicode specification. |
| byte | [CONNECTOR_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONNECTOR_PUNCTUATION) | General category "Pc" in the Unicode specification. |
| byte | [CONTROL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONTROL) | General category "Cc" in the Unicode specification. |
| byte | [CURRENCY_SYMBOL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CURRENCY_SYMBOL) | General category "Sc" in the Unicode specification. |
| byte | [DASH_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DASH_PUNCTUATION) | General category "Pd" in the Unicode specification. |
| byte | [DECIMAL_DIGIT_NUMBER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DECIMAL_DIGIT_NUMBER) | General category "Nd" in the Unicode specification. |
| byte | [DIRECTIONALITY_ARABIC_NUMBER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_ARABIC_NUMBER) | Weak bidirectional character type "AN" in the Unicode specification. |
| byte | [DIRECTIONALITY_BOUNDARY_NEUTRAL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_BOUNDARY_NEUTRAL) | Weak bidirectional character type "BN" in the Unicode specification. |
| byte | [DIRECTIONALITY_COMMON_NUMBER_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_COMMON_NUMBER_SEPARATOR) | Weak bidirectional character type "CS" in the Unicode specification. |
| byte | [DIRECTIONALITY_EUROPEAN_NUMBER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER) | Weak bidirectional character type "EN" in the Unicode specification. |
| byte | [DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR) | Weak bidirectional character type "ES" in the Unicode specification. |
| byte | [DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR) | Weak bidirectional character type "ET" in the Unicode specification. |
| byte | [DIRECTIONALITY_LEFT_TO_RIGHT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT) | Strong bidirectional character type "L" in the Unicode specification. |
| byte | [DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING) | Strong bidirectional character type "LRE" in the Unicode specification. |
| byte | [DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE) | Strong bidirectional character type "LRO" in the Unicode specification. |
| byte | [DIRECTIONALITY_NONSPACING_MARK](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_NONSPACING_MARK) | Weak bidirectional character type "NSM" in the Unicode specification. |
| byte | [DIRECTIONALITY_OTHER_NEUTRALS](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_OTHER_NEUTRALS) | Neutral bidirectional character type "ON" in the Unicode specification. |
| byte | [DIRECTIONALITY_PARAGRAPH_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_PARAGRAPH_SEPARATOR) | Neutral bidirectional character type "B" in the Unicode specification. |
| byte | [DIRECTIONALITY_POP_DIRECTIONAL_FORMAT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_POP_DIRECTIONAL_FORMAT) | Weak bidirectional character type "PDF" in the Unicode specification. |
| byte | [DIRECTIONALITY_RIGHT_TO_LEFT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT) | Strong bidirectional character type "R" in the Unicode specification. |
| byte | [DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC) | Strong bidirectional character type "AL" in the Unicode specification. |
| byte | [DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING) | Strong bidirectional character type "RLE" in the Unicode specification. |
| byte | [DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE) | Strong bidirectional character type "RLO" in the Unicode specification. |
| byte | [DIRECTIONALITY_SEGMENT_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_SEGMENT_SEPARATOR) | Neutral bidirectional character type "S" in the Unicode specification. |
| byte | [DIRECTIONALITY_UNDEFINED](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_UNDEFINED) | Undefined bidirectional character type. |
| byte | [DIRECTIONALITY_WHITESPACE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_WHITESPACE) | Neutral bidirectional character type "WS" in the Unicode specification. |
| byte | [ENCLOSING_MARK](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#ENCLOSING_MARK) | General category "Me" in the Unicode specification. |
| byte | [END_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#END_PUNCTUATION) | General category "Pe" in the Unicode specification. |
| byte | [FINAL_QUOTE_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FINAL_QUOTE_PUNCTUATION) | General category "Pf" in the Unicode specification. |
| byte | [FORMAT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FORMAT) | General category "Cf" in the Unicode specification. |
| byte | [INITIAL_QUOTE_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#INITIAL_QUOTE_PUNCTUATION) | General category "Pi" in the Unicode specification. |
| byte | [LETTER_NUMBER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LETTER_NUMBER) | General category "Nl" in the Unicode specification. |
| byte | [LINE_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LINE_SEPARATOR) | General category "Zl" in the Unicode specification. |
| byte | [LOWERCASE_LETTER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LOWERCASE_LETTER) | General category "Ll" in the Unicode specification. |
| byte | [MATH_SYMBOL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MATH_SYMBOL) | General category "Sm" in the Unicode specification. |
| int | [MAX_CODE_POINT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_CODE_POINT) | The maximum value of a [Unicode code point](http://www.unicode.org/glossary/#code_point), constant `U+10FFFF`. |
| char | [MAX_HIGH_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_HIGH_SURROGATE) | The maximum value of a [Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit) in the UTF-16 encoding, constant `'\uDBFF'`. |
| char | [MAX_LOW_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_LOW_SURROGATE) | The maximum value of a [Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit) in the UTF-16 encoding, constant `'\uDFFF'`. |
| int | [MAX_RADIX](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_RADIX) | The maximum radix available for conversion to and from strings. |
| char | [MAX_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_SURROGATE) | The maximum value of a Unicode surrogate code unit in the UTF-16 encoding, constant `'\uDFFF'`. |
| char | [MAX_VALUE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_VALUE) | The constant value of this field is the largest value of type `char`, `'\uFFFF'`. |
| int | [MIN_CODE_POINT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_CODE_POINT) | The minimum value of a [Unicode code point](http://www.unicode.org/glossary/#code_point), constant `U+0000`. |
| char | [MIN_HIGH_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_HIGH_SURROGATE) | The minimum value of a [Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit) in the UTF-16 encoding, constant `'\uD800'`. |
| char | [MIN_LOW_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_LOW_SURROGATE) | The minimum value of a [Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit) in the UTF-16 encoding, constant `'\uDC00'`. |
| int | [MIN_RADIX](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_RADIX) | The minimum radix available for conversion to and from strings. |
| int | [MIN_SUPPLEMENTARY_CODE_POINT](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_SUPPLEMENTARY_CODE_POINT) | The minimum value of a [Unicode supplementary code point](http://www.unicode.org/glossary/#supplementary_code_point), constant `U+10000`. |
| char | [MIN_SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_SURROGATE) | The minimum value of a Unicode surrogate code unit in the UTF-16 encoding, constant `'\uD800'`. |
| char | [MIN_VALUE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_VALUE) | The constant value of this field is the smallest value of type `char`, `'\u0000'`. |
| byte | [MODIFIER_LETTER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_LETTER) | General category "Lm" in the Unicode specification. |
| byte | [MODIFIER_SYMBOL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_SYMBOL) | General category "Sk" in the Unicode specification. |
| byte | [NON_SPACING_MARK](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#NON_SPACING_MARK) | General category "Mn" in the Unicode specification. |
| byte | [OTHER_LETTER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_LETTER) | General category "Lo" in the Unicode specification. |
| byte | [OTHER_NUMBER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_NUMBER) | General category "No" in the Unicode specification. |
| byte | [OTHER_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_PUNCTUATION) | General category "Po" in the Unicode specification. |
| byte | [OTHER_SYMBOL](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_SYMBOL) | General category "So" in the Unicode specification. |
| byte | [PARAGRAPH_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PARAGRAPH_SEPARATOR) | General category "Zp" in the Unicode specification. |
| byte | [PRIVATE_USE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PRIVATE_USE) | General category "Co" in the Unicode specification. |
| int | [SIZE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SIZE) | The number of bits used to represent a char value in unsigned binary form, constant `16`. |
| byte | [SPACE_SEPARATOR](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SPACE_SEPARATOR) | General category "Zs" in the Unicode specification. |
| byte | [START_PUNCTUATION](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#START_PUNCTUATION) | General category "Ps" in the Unicode specification. |
| byte | [SURROGATE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SURROGATE) | General category "Cs" in the Unicode specification. |
| byte | [TITLECASE_LETTER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#TITLECASE_LETTER) | General category "Lt" in the Unicode specification. |
| byte | [UNASSIGNED](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UNASSIGNED) | General category "Cn" in the Unicode specification. |
| byte | [UPPERCASE_LETTER](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UPPERCASE_LETTER) | General category "Lu" in the Unicode specification. |

### Field Summary

|---|---|---|
| public static final [Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<[Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html)\> | [TYPE](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#TYPE) | The `Class` instance representing the primitive type `char`. |

### Public Constructor Summary

|---|---|
|   | [Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#Character(char))(char value) Constructs a newly allocated `Character` object that represents the specified `char` value. |

### Public Method Summary

|---|---|
| static int | [charCount](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#charCount(int))(int codePoint) Determines the number of `char` values needed to represent the specified character (Unicode code point). |
| char | [charValue](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#charValue())() Returns the value of this `Character` object. |
| static int | [codePointAt](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointAt(char[],%20int,%20int))(char\[\] a, int index, int limit) Returns the code point at the given index of the `char` array, where only array elements with `index` less than `limit` can be used. |
| static int | [codePointAt](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointAt(char[],%20int))(char\[\] a, int index) Returns the code point at the given index of the `char` array. |
| static int | [codePointAt](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointAt(java.lang.CharSequence,%20int))([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index) Returns the code point at the given index of the `CharSequence`. |
| static int | [codePointBefore](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointBefore(char[],%20int))(char\[\] a, int index) Returns the code point preceding the given index of the `char` array. |
| static int | [codePointBefore](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointBefore(java.lang.CharSequence,%20int))([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index) Returns the code point preceding the given index of the `CharSequence`. |
| static int | [codePointBefore](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointBefore(char[],%20int,%20int))(char\[\] a, int index, int start) Returns the code point preceding the given index of the `char` array, where only array elements with `index` greater than or equal to `start` can be used. |
| static int | [codePointCount](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointCount(java.lang.CharSequence,%20int,%20int))([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int beginIndex, int endIndex) Returns the number of Unicode code points in the text range of the specified char sequence. |
| static int | [codePointCount](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#codePointCount(char[],%20int,%20int))(char\[\] a, int offset, int count) Returns the number of Unicode code points in a subarray of the `char` array argument. |
| static int | [compare](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#compare(char,%20char))(char x, char y) Compares two `char` values numerically. |
| int | [compareTo](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#compareTo(java.lang.Character))([Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html) anotherCharacter) Compares two `Character` objects numerically. |
| static int | [digit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(int,%20int))(int codePoint, int radix) Returns the numeric value of the specified character (Unicode code point) in the specified radix. |
| static int | [digit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(char,%20int))(char ch, int radix) Returns the numeric value of the character `ch` in the specified radix. |
| boolean | [equals](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#equals(java.lang.Object))([Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) obj) Compares this object against the specified object. |
| static char | [forDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int))(int digit, int radix) Determines the character representation for a specific digit in the specified radix. |
| static byte | [getDirectionality](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getDirectionality(char))(char ch) Returns the Unicode directionality property for the given character. |
| static byte | [getDirectionality](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getDirectionality(int))(int codePoint) Returns the Unicode directionality property for the given character (Unicode code point). |
| static [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getName](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getName(int))(int codePoint) Returns the Unicode name of the specified character `codePoint`, or null if the code point is `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UNASSIGNED`. |
| static int | [getNumericValue](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getNumericValue(int))(int codePoint) Returns the `int` value that the specified character (Unicode code point) represents. |
| static int | [getNumericValue](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getNumericValue(char))(char ch) Returns the `int` value that the specified Unicode character represents. |
| static int | [getType](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char))(char ch) Returns a value indicating a character's general category. |
| static int | [getType](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int))(int codePoint) Returns a value indicating a character's general category. |
| static int | [hashCode](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#hashCode(char))(char value) Returns a hash code for a `char` value; compatible with `Character.hashCode()`. |
| int | [hashCode](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#hashCode())() Returns a hash code for this `Character`; equal to the result of invoking `charValue()`. |
| static char | [highSurrogate](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#highSurrogate(int))(int codePoint) Returns the leading surrogate (a [high surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit)) of the [surrogate pair](http://www.unicode.org/glossary/#surrogate_pair) representing the specified supplementary character (Unicode code point) in the UTF-16 encoding. |
| static boolean | [isAlphabetic](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isAlphabetic(int))(int codePoint) Determines if the specified character (Unicode code point) is an alphabet. |
| static boolean | [isBmpCodePoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isBmpCodePoint(int))(int codePoint) Determines whether the specified character (Unicode code point) is in the [Basic Multilingual Plane (BMP)](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#BMP). |
| static boolean | [isDefined](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDefined(int))(int codePoint) Determines if a character (Unicode code point) is defined in Unicode. |
| static boolean | [isDefined](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDefined(char))(char ch) Determines if a character is defined in Unicode. |
| static boolean | [isDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char))(char ch) Determines if the specified character is a digit. |
| static boolean | [isDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int))(int codePoint) Determines if the specified character (Unicode code point) is a digit. |
| static boolean | [isHighSurrogate](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isHighSurrogate(char))(char ch) Determines if the given `char` value is a [Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit) (also known as *leading-surrogate code unit*). |
| static boolean | [isISOControl](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isISOControl(char))(char ch) Determines if the specified character is an ISO control character. |
| static boolean | [isISOControl](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isISOControl(int))(int codePoint) Determines if the referenced character (Unicode code point) is an ISO control character. |
| static boolean | [isIdentifierIgnorable](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(char))(char ch) Determines if the specified character should be regarded as an ignorable character in a Java identifier or a Unicode identifier. |
| static boolean | [isIdentifierIgnorable](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(int))(int codePoint) Determines if the specified character (Unicode code point) should be regarded as an ignorable character in a Java identifier or a Unicode identifier. |
| static boolean | [isIdeographic](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdeographic(int))(int codePoint) Determines if the specified character (Unicode code point) is a CJKV (Chinese, Japanese, Korean and Vietnamese) ideograph, as defined by the Unicode Standard. |
| static boolean | [isJavaIdentifierPart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char))(char ch) Determines if the specified character may be part of a Java identifier as other than the first character. |
| static boolean | [isJavaIdentifierPart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int))(int codePoint) Determines if the character (Unicode code point) may be part of a Java identifier as other than the first character. |
| static boolean | [isJavaIdentifierStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(int))(int codePoint) Determines if the character (Unicode code point) is permissible as the first character in a Java identifier. |
| static boolean | [isJavaIdentifierStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char))(char ch) Determines if the specified character is permissible as the first character in a Java identifier. |
| static boolean | [isJavaLetter](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetter(char))(char ch) *This method is deprecated. Replaced by isJavaIdentifierStart(char).* |
| static boolean | [isJavaLetterOrDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetterOrDigit(char))(char ch) *This method is deprecated. Replaced by isJavaIdentifierPart(char).* |
| static boolean | [isLetter](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char))(char ch) Determines if the specified character is a letter. |
| static boolean | [isLetter](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int))(int codePoint) Determines if the specified character (Unicode code point) is a letter. |
| static boolean | [isLetterOrDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char))(char ch) Determines if the specified character is a letter or digit. |
| static boolean | [isLetterOrDigit](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int))(int codePoint) Determines if the specified character (Unicode code point) is a letter or digit. |
| static boolean | [isLowSurrogate](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowSurrogate(char))(char ch) Determines if the given `char` value is a [Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit) (also known as *trailing-surrogate code unit*). |
| static boolean | [isLowerCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char))(char ch) Determines if the specified character is a lowercase character. |
| static boolean | [isLowerCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int))(int codePoint) Determines if the specified character (Unicode code point) is a lowercase character. |
| static boolean | [isMirrored](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isMirrored(int))(int codePoint) Determines whether the specified character (Unicode code point) is mirrored according to the Unicode specification. |
| static boolean | [isMirrored](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isMirrored(char))(char ch) Determines whether the character is mirrored according to the Unicode specification. |
| static boolean | [isSpace](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpace(char))(char ch) *This method is deprecated. Replaced by isWhitespace(char).* |
| static boolean | [isSpaceChar](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(char))(char ch) Determines if the specified character is a Unicode space character. |
| static boolean | [isSpaceChar](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(int))(int codePoint) Determines if the specified character (Unicode code point) is a Unicode space character. |
| static boolean | [isSupplementaryCodePoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSupplementaryCodePoint(int))(int codePoint) Determines whether the specified character (Unicode code point) is in the [supplementary character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary) range. |
| static boolean | [isSurrogate](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSurrogate(char))(char ch) Determines if the given `char` value is a Unicode *surrogate code unit*. |
| static boolean | [isSurrogatePair](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSurrogatePair(char,%20char))(char high, char low) Determines whether the specified pair of `char` values is a valid [Unicode surrogate pair](http://www.unicode.org/glossary/#surrogate_pair). |
| static boolean | [isTitleCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int))(int codePoint) Determines if the specified character (Unicode code point) is a titlecase character. |
| static boolean | [isTitleCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char))(char ch) Determines if the specified character is a titlecase character. |
| static boolean | [isUnicodeIdentifierPart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int))(int codePoint) Determines if the specified character (Unicode code point) may be part of a Unicode identifier as other than the first character. |
| static boolean | [isUnicodeIdentifierPart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char))(char ch) Determines if the specified character may be part of a Unicode identifier as other than the first character. |
| static boolean | [isUnicodeIdentifierStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(int))(int codePoint) Determines if the specified character (Unicode code point) is permissible as the first character in a Unicode identifier. |
| static boolean | [isUnicodeIdentifierStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(char))(char ch) Determines if the specified character is permissible as the first character in a Unicode identifier. |
| static boolean | [isUpperCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(char))(char ch) Determines if the specified character is an uppercase character. |
| static boolean | [isUpperCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int))(int codePoint) Determines if the specified character (Unicode code point) is an uppercase character. |
| static boolean | [isValidCodePoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isValidCodePoint(int))(int codePoint) Determines whether the specified code point is a valid [Unicode code point value](http://www.unicode.org/glossary/#code_point). |
| static boolean | [isWhitespace](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(int))(int codePoint) Determines if the specified character (Unicode code point) is white space according to Java. |
| static boolean | [isWhitespace](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(char))(char ch) Determines if the specified character is white space according to Java. |
| static char | [lowSurrogate](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#lowSurrogate(int))(int codePoint) Returns the trailing surrogate (a [low surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit)) of the [surrogate pair](http://www.unicode.org/glossary/#surrogate_pair) representing the specified supplementary character (Unicode code point) in the UTF-16 encoding. |
| static int | [offsetByCodePoints](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#offsetByCodePoints(java.lang.CharSequence,%20int,%20int))([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index, int codePointOffset) Returns the index within the given char sequence that is offset from the given `index` by `codePointOffset` code points. |
| static int | [offsetByCodePoints](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#offsetByCodePoints(char[],%20int,%20int,%20int,%20int))(char\[\] a, int start, int count, int index, int codePointOffset) Returns the index within the given `char` subarray that is offset from the given `index` by `codePointOffset` code points. |
| static char | [reverseBytes](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#reverseBytes(char))(char ch) Returns the value obtained by reversing the order of the bytes in the specified char value. |
| static int | [toChars](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toChars(int,%20char[],%20int))(int codePoint, char\[\] dst, int dstIndex) Converts the specified character (Unicode code point) to its UTF-16 representation. |
| static char\[\] | [toChars](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toChars(int))(int codePoint) Converts the specified character (Unicode code point) to its UTF-16 representation stored in a `char` array. |
| static int | [toCodePoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toCodePoint(char,%20char))(char high, char low) Converts the specified surrogate pair to its supplementary code point value. |
| static int | [toLowerCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(int))(int codePoint) Converts the character (Unicode code point) argument to lowercase using case mapping information from the UnicodeData file. |
| static char | [toLowerCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(char))(char ch) Converts the character argument to lowercase using case mapping information from the UnicodeData file. |
| [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [toString](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toString())() Returns a `String` object representing this `Character`'s value. |
| static [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [toString](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toString(char))(char c) Returns a `String` object representing the specified `char`. |
| static char | [toTitleCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toTitleCase(char))(char ch) Converts the character argument to titlecase using case mapping information from the UnicodeData file. |
| static int | [toTitleCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toTitleCase(int))(int codePoint) Converts the character (Unicode code point) argument to titlecase using case mapping information from the UnicodeData file. |
| static char | [toUpperCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(char))(char ch) Converts the character argument to uppercase using case mapping information from the UnicodeData file. |
| static int | [toUpperCase](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(int))(int codePoint) Converts the character (Unicode code point) argument to uppercase using case mapping information from the UnicodeData file. |
| static [Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html) | [valueOf](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#valueOf(char))(char c) Returns a Character instance representing the specified char value. |

### Inherited Method Summary

From class [java.lang.Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html)

|---|---|
| [Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) | [clone](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#clone())() Creates and returns a copy of this `Object`. |
| boolean | [equals](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#equals(java.lang.Object))([Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) obj) Compares this instance with the specified object and indicates if they are equal. |
| void | [finalize](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#finalize())() Invoked when the garbage collector has detected that this instance is no longer reachable. |
| final [Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<?\> | [getClass](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#getClass())() Returns the unique instance of `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html` that represents this object's class. |
| int | [hashCode](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#hashCode())() Returns an integer hash code for this object. |
| final void | [notify](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#notify())() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |
| final void | [notifyAll](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#notifyAll())() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |
| [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [toString](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#toString())() Returns a string containing a concise, human-readable description of this object. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#wait(long,%20int))(long timeout, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#wait(long))(long timeout) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#wait())() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object. |

From interface [java.lang.Comparable](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Comparable.html)

|---|---|
| abstract int | [compareTo](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Comparable.html#compareTo(T))([Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html) o) Compares this object with the specified object for order. |

## Constants

#### public static final int
**BYTES**

The number of bytes used to represent a `char` value in unsigned
binary form.
Constant Value: 2

#### public static final byte
**COMBINING_SPACING_MARK**

General category "Mc" in the Unicode specification.
Constant Value: 8

#### public static final byte
**CONNECTOR_PUNCTUATION**

General category "Pc" in the Unicode specification.
Constant Value: 23

#### public static final byte
**CONTROL**

General category "Cc" in the Unicode specification.
Constant Value: 15

#### public static final byte
**CURRENCY_SYMBOL**

General category "Sc" in the Unicode specification.
Constant Value: 26

#### public static final byte
**DASH_PUNCTUATION**

General category "Pd" in the Unicode specification.
Constant Value: 20

#### public static final byte
**DECIMAL_DIGIT_NUMBER**

General category "Nd" in the Unicode specification.
Constant Value: 9

#### public static final byte
**DIRECTIONALITY_ARABIC_NUMBER**

Weak bidirectional character type "AN" in the Unicode specification.
Constant Value: 6

#### public static final byte
**DIRECTIONALITY_BOUNDARY_NEUTRAL**

Weak bidirectional character type "BN" in the Unicode specification.
Constant Value: 9

#### public static final byte
**DIRECTIONALITY_COMMON_NUMBER_SEPARATOR**

Weak bidirectional character type "CS" in the Unicode specification.
Constant Value: 7

#### public static final byte
**DIRECTIONALITY_EUROPEAN_NUMBER**

Weak bidirectional character type "EN" in the Unicode specification.
Constant Value: 3

#### public static final byte
**DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR**

Weak bidirectional character type "ES" in the Unicode specification.
Constant Value: 4

#### public static final byte
**DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR**

Weak bidirectional character type "ET" in the Unicode specification.
Constant Value: 5

#### public static final byte
**DIRECTIONALITY_LEFT_TO_RIGHT**

Strong bidirectional character type "L" in the Unicode specification.
Constant Value: 0

#### public static final byte
**DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING**

Strong bidirectional character type "LRE" in the Unicode specification.
Constant Value: 14

#### public static final byte
**DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE**

Strong bidirectional character type "LRO" in the Unicode specification.
Constant Value: 15

#### public static final byte
**DIRECTIONALITY_NONSPACING_MARK**

Weak bidirectional character type "NSM" in the Unicode specification.
Constant Value: 8

#### public static final byte
**DIRECTIONALITY_OTHER_NEUTRALS**

Neutral bidirectional character type "ON" in the Unicode specification.
Constant Value: 13

#### public static final byte
**DIRECTIONALITY_PARAGRAPH_SEPARATOR**

Neutral bidirectional character type "B" in the Unicode specification.
Constant Value: 10

#### public static final byte
**DIRECTIONALITY_POP_DIRECTIONAL_FORMAT**

Weak bidirectional character type "PDF" in the Unicode specification.
Constant Value: 18

#### public static final byte
**DIRECTIONALITY_RIGHT_TO_LEFT**

Strong bidirectional character type "R" in the Unicode specification.
Constant Value: 1

#### public static final byte
**DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC**

Strong bidirectional character type "AL" in the Unicode specification.
Constant Value: 2

#### public static final byte
**DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING**

Strong bidirectional character type "RLE" in the Unicode specification.
Constant Value: 16

#### public static final byte
**DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE**

Strong bidirectional character type "RLO" in the Unicode specification.
Constant Value: 17

#### public static final byte
**DIRECTIONALITY_SEGMENT_SEPARATOR**

Neutral bidirectional character type "S" in the Unicode specification.
Constant Value: 11

#### public static final byte
**DIRECTIONALITY_UNDEFINED**

Undefined bidirectional character type. Undefined `char`
values have undefined directionality in the Unicode specification.
Constant Value: -1

#### public static final byte
**DIRECTIONALITY_WHITESPACE**

Neutral bidirectional character type "WS" in the Unicode specification.
Constant Value: 12

#### public static final byte
**ENCLOSING_MARK**

General category "Me" in the Unicode specification.
Constant Value: 7

#### public static final byte
**END_PUNCTUATION**

General category "Pe" in the Unicode specification.
Constant Value: 22

#### public static final byte
**FINAL_QUOTE_PUNCTUATION**

General category "Pf" in the Unicode specification.
Constant Value: 30

#### public static final byte
**FORMAT**

General category "Cf" in the Unicode specification.
Constant Value: 16

#### public static final byte
**INITIAL_QUOTE_PUNCTUATION**

General category "Pi" in the Unicode specification.
Constant Value: 29

#### public static final byte
**LETTER_NUMBER**

General category "Nl" in the Unicode specification.
Constant Value: 10

#### public static final byte
**LINE_SEPARATOR**

General category "Zl" in the Unicode specification.
Constant Value: 13

#### public static final byte
**LOWERCASE_LETTER**

General category "Ll" in the Unicode specification.
Constant Value: 2

#### public static final byte
**MATH_SYMBOL**

General category "Sm" in the Unicode specification.
Constant Value: 25

#### public static final int
**MAX_CODE_POINT**

The maximum value of a
[Unicode code point](http://www.unicode.org/glossary/#code_point), constant `U+10FFFF`.
Constant Value: 1114111

#### public static final char
**MAX_HIGH_SURROGATE**

The maximum value of a
[Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit)
in the UTF-16 encoding, constant `'\uDBFF'`.
A high-surrogate is also known as a *leading-surrogate*.
Constant Value: 56319

#### public static final char
**MAX_LOW_SURROGATE**

The maximum value of a
[Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit)
in the UTF-16 encoding, constant `'\uDFFF'`.
A low-surrogate is also known as a *trailing-surrogate*.
Constant Value: 57343

#### public static final int
**MAX_RADIX**

The maximum radix available for conversion to and from strings.
The constant value of this field is the largest value permitted
for the radix argument in radix-conversion methods such as the
`digit` method, the `forDigit` method, and the
`toString` method of class `Integer`.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(char,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Integer.html#toString(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Integer.html#valueOf(java.lang.String)`
Constant Value: 36

#### public static final char
**MAX_SURROGATE**

The maximum value of a Unicode surrogate code unit in the
UTF-16 encoding, constant `'\uDFFF'`.
Constant Value: 57343

#### public static final char
**MAX_VALUE**

The constant value of this field is the largest value of type
`char`, `'\uFFFF'`.
Constant Value: 65535

#### public static final int
**MIN_CODE_POINT**

The minimum value of a
[Unicode code point](http://www.unicode.org/glossary/#code_point), constant `U+0000`.
Constant Value: 0

#### public static final char
**MIN_HIGH_SURROGATE**

The minimum value of a
[Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit)
in the UTF-16 encoding, constant `'\uD800'`.
A high-surrogate is also known as a *leading-surrogate*.
Constant Value: 55296

#### public static final char
**MIN_LOW_SURROGATE**

The minimum value of a
[Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit)
in the UTF-16 encoding, constant `'\uDC00'`.
A low-surrogate is also known as a *trailing-surrogate*.
Constant Value: 56320

#### public static final int
**MIN_RADIX**

The minimum radix available for conversion to and from strings.
The constant value of this field is the smallest value permitted
for the radix argument in radix-conversion methods such as the
`digit` method, the `forDigit` method, and the
`toString` method of class `Integer`.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(char,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Integer.html#toString(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Integer.html#valueOf(java.lang.String)`
Constant Value: 2

#### public static final int
**MIN_SUPPLEMENTARY_CODE_POINT**

The minimum value of a
[Unicode supplementary code point](http://www.unicode.org/glossary/#supplementary_code_point), constant `U+10000`.
Constant Value: 65536

#### public static final char
**MIN_SURROGATE**

The minimum value of a Unicode surrogate code unit in the
UTF-16 encoding, constant `'\uD800'`.
Constant Value: 55296

#### public static final char
**MIN_VALUE**

The constant value of this field is the smallest value of type
`char`, `'\u0000'`.
Constant Value: 0

#### public static final byte
**MODIFIER_LETTER**

General category "Lm" in the Unicode specification.
Constant Value: 4

#### public static final byte
**MODIFIER_SYMBOL**

General category "Sk" in the Unicode specification.
Constant Value: 27

#### public static final byte
**NON_SPACING_MARK**

General category "Mn" in the Unicode specification.
Constant Value: 6

#### public static final byte
**OTHER_LETTER**

General category "Lo" in the Unicode specification.
Constant Value: 5

#### public static final byte
**OTHER_NUMBER**

General category "No" in the Unicode specification.
Constant Value: 11

#### public static final byte
**OTHER_PUNCTUATION**

General category "Po" in the Unicode specification.
Constant Value: 24

#### public static final byte
**OTHER_SYMBOL**

General category "So" in the Unicode specification.
Constant Value: 28

#### public static final byte
**PARAGRAPH_SEPARATOR**

General category "Zp" in the Unicode specification.
Constant Value: 14

#### public static final byte
**PRIVATE_USE**

General category "Co" in the Unicode specification.
Constant Value: 18

#### public static final int
**SIZE**

The number of bits used to represent a char value in unsigned
binary form, constant `16`.
Constant Value: 16

#### public static final byte
**SPACE_SEPARATOR**

General category "Zs" in the Unicode specification.
Constant Value: 12

#### public static final byte
**START_PUNCTUATION**

General category "Ps" in the Unicode specification.
Constant Value: 21

#### public static final byte
**SURROGATE**

General category "Cs" in the Unicode specification.
Constant Value: 19

#### public static final byte
**TITLECASE_LETTER**

General category "Lt" in the Unicode specification.
Constant Value: 3

#### public static final byte
**UNASSIGNED**

General category "Cn" in the Unicode specification.
Constant Value: 0

#### public static final byte
**UPPERCASE_LETTER**

General category "Lu" in the Unicode specification.
Constant Value: 1

## Fields

#### public static final [Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<[Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html)\>
**TYPE**

The `Class` instance representing the primitive type
`char`.

## Public Constructors

#### public
**Character**
(char value)

Constructs a newly allocated `Character` object that
represents the specified `char` value.

##### Parameters

| value | the value to be represented by the `Character` object. |
|---|---|

## Public Methods

#### public static int
**charCount**
(int codePoint)

Determines the number of `char` values needed to
represent the specified character (Unicode code point). If the
specified character is equal to or greater than 0x10000, then
the method returns 2. Otherwise, the method returns 1.

This method doesn't validate the specified character to be a
valid Unicode code point. The caller must validate the
character value using `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isValidCodePoint(int)`
if necessary.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- 2 if the character is a valid supplementary character; 1 otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSupplementaryCodePoint(int)`

#### public char
**charValue**
()

Returns the value of this `Character` object.

##### Returns

- the primitive `char` value represented by this object.

#### public static int
**codePointAt**
(char\[\] a, int index, int limit)

Returns the code point at the given index of the
`char` array, where only array elements with
`index` less than `limit` can be used. If
the `char` value at the given index in the
`char` array is in the high-surrogate range, the
following index is less than the `limit`, and the
`char` value at the following index is in the
low-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at the given index is returned.

##### Parameters

| a | the `char` array |
| index | the index to the `char` values (Unicode code units) in the `char` array to be converted |
| limit | the index after the last array element that can be used in the `char` array |
|---|---|

##### Returns

- the Unicode code point at the given index

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the `index` argument is negative or not less than the `limit` argument, or if the `limit` argument is negative or greater than the length of the `char` array. |
|---|---|

#### public static int
**codePointAt**
(char\[\] a, int index)

Returns the code point at the given index of the
`char` array. If the `char` value at
the given index in the `char` array is in the
high-surrogate range, the following index is less than the
length of the `char` array, and the
`char` value at the following index is in the
low-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at the given index is returned.

##### Parameters

| a | the `char` array |
| index | the index to the `char` values (Unicode code units) in the `char` array to be converted |
|---|---|

##### Returns

- the Unicode code point at the given index

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the value `index` is negative or not less than the length of the `char` array. |
|---|---|

#### public static int
**codePointAt**
([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index)

Returns the code point at the given index of the
`CharSequence`. If the `char` value at
the given index in the `CharSequence` is in the
high-surrogate range, the following index is less than the
length of the `CharSequence`, and the
`char` value at the following index is in the
low-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at the given index is returned.

##### Parameters

| seq | a sequence of `char` values (Unicode code units) |
| index | the index to the `char` values (Unicode code units) in `seq` to be converted |
|---|---|

##### Returns

- the Unicode code point at the given index

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `seq` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the value `index` is negative or not less than `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html#length()`. |
|---|---|

#### public static int
**codePointBefore**
(char\[\] a, int index)

Returns the code point preceding the given index of the
`char` array. If the `char` value at
`(index - 1)` in the `char` array is in
the low-surrogate range, `(index - 2)` is not
negative, and the `char` value at `(index - 2)`
in the `char` array is in the
high-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at `(index - 1)` is
returned.

##### Parameters

| a | the `char` array |
| index | the index following the code point that should be returned |
|---|---|

##### Returns

- the Unicode code point value before the given index.

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the `index` argument is less than 1 or greater than the length of the `char` array |
|---|---|

#### public static int
**codePointBefore**
([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index)

Returns the code point preceding the given index of the
`CharSequence`. If the `char` value at
`(index - 1)` in the `CharSequence` is in
the low-surrogate range, `(index - 2)` is not
negative, and the `char` value at `(index - 2)`
in the `CharSequence` is in the
high-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at `(index - 1)` is
returned.

##### Parameters

| seq | the `CharSequence` instance |
| index | the index following the code point that should be returned |
|---|---|

##### Returns

- the Unicode code point value before the given index.

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `seq` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the `index` argument is less than 1 or greater than `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html#length()`. |
|---|---|

#### public static int
**codePointBefore**
(char\[\] a, int index, int start)

Returns the code point preceding the given index of the
`char` array, where only array elements with
`index` greater than or equal to `start`
can be used. If the `char` value at `(index - 1)`
in the `char` array is in the
low-surrogate range, `(index - 2)` is not less than
`start`, and the `char` value at
`(index - 2)` in the `char` array is in
the high-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the `char` value at `(index - 1)` is
returned.

##### Parameters

| a | the `char` array |
| index | the index following the code point that should be returned |
| start | the index of the first array element in the `char` array |
|---|---|

##### Returns

- the Unicode code point value before the given index.

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the `index` argument is not greater than the `start` argument or is greater than the length of the `char` array, or if the `start` argument is negative or not less than the length of the `char` array. |
|---|---|

#### public static int
**codePointCount**
([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int beginIndex, int endIndex)

Returns the number of Unicode code points in the text range of
the specified char sequence. The text range begins at the
specified `beginIndex` and extends to the
`char` at index `endIndex - 1`. Thus the
length (in `char`s) of the text range is
`endIndex-beginIndex`. Unpaired surrogates within
the text range count as one code point each.

##### Parameters

| seq | the char sequence |
| beginIndex | the index to the first `char` of the text range. |
| endIndex | the index after the last `char` of the text range. |
|---|---|

##### Returns

- the number of Unicode code points in the specified text range

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `seq` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if the `beginIndex` is negative, or `endIndex` is larger than the length of the given sequence, or `beginIndex` is larger than `endIndex`. |
|---|---|

#### public static int
**codePointCount**
(char\[\] a, int offset, int count)

Returns the number of Unicode code points in a subarray of the
`char` array argument. The `offset`
argument is the index of the first `char` of the
subarray and the `count` argument specifies the
length of the subarray in `char`s. Unpaired
surrogates within the subarray count as one code point each.

##### Parameters

| a | the `char` array |
| offset | the index of the first `char` in the given `char` array |
| count | the length of the subarray in `char`s |
|---|---|

##### Returns

- the number of Unicode code points in the specified subarray

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if `offset` or `count` is negative, or if `offset + count` is larger than the length of the given array. |
|---|---|

#### public static int
**compare**
(char x, char y)

Compares two `char` values numerically.
The value returned is identical to what would be returned by:

```
    Character.valueOf(x).compareTo(Character.valueOf(y))
 
```

<br />

##### Parameters

| x | the first `char` to compare |
| y | the second `char` to compare |
|---|---|

##### Returns

- the value `0` if `x == y`; a value less than `0` if `x < y`; and a value greater than `0` if `x > y`

#### public int
**compareTo**
([Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html) anotherCharacter)

Compares two `Character` objects numerically.

##### Parameters

| anotherCharacter | the `Character` to be compared. |
|---|---|

##### Returns

- the value `0` if the argument `Character` is equal to this `Character`; a value less than `0` if this `Character` is numerically less than the `Character` argument; and a value greater than `0` if this `Character` is numerically greater than the `Character` argument (unsigned comparison). Note that this is strictly a numerical comparison; it is not locale-dependent.

#### public static int
**digit**
(int codePoint, int radix)

Returns the numeric value of the specified character (Unicode
code point) in the specified radix.

If the radix is not in the range `MIN_RADIX` ≤
`radix` ≤ `MAX_RADIX` or if the
character is not a valid digit in the specified
radix, `-1` is returned. A character is a valid digit
if at least one of the following is true:

- The method `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)` is `true` of the character and the Unicode decimal digit value of the character (or its single-character decomposition) is less than the specified radix. In this case the decimal digit value is returned.
- The character is one of the uppercase Latin letters `'A'` through `'Z'` and its code is less than `radix + 'A' - 10`. In this case, `codePoint - 'A' + 10` is returned.
- The character is one of the lowercase Latin letters `'a'` through `'z'` and its code is less than `radix + 'a' - 10`. In this case, `codePoint - 'a' + 10` is returned.
- The character is one of the fullwidth uppercase Latin letters A (`'\uFF21'`) through Z (`'\uFF3A'`) and its code is less than `radix + '\uFF21' - 10`. In this case, `codePoint - '\uFF21' + 10` is returned.
- The character is one of the fullwidth lowercase Latin letters a (`'\uFF41'`) through z (`'\uFF5A'`) and its code is less than `radix + '\uFF41'- 10`. In this case, `codePoint - '\uFF41' + 10` is returned.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
| radix | the radix. |
|---|---|

##### Returns

- the numeric value represented by the character in the specified radix.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)`

#### public static int
**digit**
(char ch, int radix)

Returns the numeric value of the character `ch` in the
specified radix.


If the radix is not in the range `MIN_RADIX` ≤
`radix` ≤ `MAX_RADIX` or if the
value of `ch` is not a valid digit in the specified
radix, `-1` is returned. A character is a valid digit
if at least one of the following is true:

- The method `isDigit` is `true` of the character and the Unicode decimal digit value of the character (or its single-character decomposition) is less than the specified radix. In this case the decimal digit value is returned.
- The character is one of the uppercase Latin letters `'A'` through `'Z'` and its code is less than `radix + 'A' - 10`. In this case, `ch - 'A' + 10` is returned.
- The character is one of the lowercase Latin letters `'a'` through `'z'` and its code is less than `radix + 'a' - 10`. In this case, `ch - 'a' + 10` is returned.
- The character is one of the fullwidth uppercase Latin letters A (`'\uFF21'`) through Z (`'\uFF3A'`) and its code is less than `radix + '\uFF21' - 10`. In this case, `ch - '\uFF21' + 10` is returned.
- The character is one of the fullwidth lowercase Latin letters a (`'\uFF41'`) through z (`'\uFF5A'`) and its code is less than `radix + '\uFF41' - 10`. In this case, `ch - '\uFF41' + 10` is returned.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(int,%20int)` method.

##### Parameters

| ch | the character to be converted. |
| radix | the radix. |
|---|---|

##### Returns

- the numeric value represented by the character in the specified radix.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char)`

#### public boolean
**equals**
([Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) obj)

Compares this object against the specified object.
The result is `true` if and only if the argument is not
`null` and is a `Character` object that
represents the same `char` value as this object.

##### Parameters

| obj | the object to compare with. |
|---|---|

##### Returns

- `true` if the objects are the same; `false` otherwise.

#### public static char
**forDigit**
(int digit, int radix)

Determines the character representation for a specific digit in
the specified radix. If the value of `radix` is not a
valid radix, or the value of `digit` is not a valid
digit in the specified radix, the null character
(`'\u0000'`) is returned.


The `radix` argument is valid if it is greater than or
equal to `MIN_RADIX` and less than or equal to
`MAX_RADIX`. The `digit` argument is valid if
`0 <= digit < radix`.


If the digit is less than 10, then
`'0' + digit` is returned. Otherwise, the value
`'a' + digit - 10` is returned.

##### Parameters

| digit | the number to convert to a character. |
| radix | the radix. |
|---|---|

##### Returns

- the `char` representation of the specified digit in the specified radix.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_RADIX`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_RADIX`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(char,%20int)`

#### public static byte
**getDirectionality**
(char ch)

Returns the Unicode directionality property for the given
character. Character directionality is used to calculate the
visual ordering of text. The directionality value of undefined
`char` values is `DIRECTIONALITY_UNDEFINED`.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getDirectionality(int)` method.

##### Parameters

| ch | `char` for which the directionality property is requested. |
|---|---|

##### Returns

- the directionality property of the `char` value.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_UNDEFINED`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_ARABIC_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_COMMON_NUMBER_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_NONSPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_BOUNDARY_NEUTRAL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_PARAGRAPH_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_SEGMENT_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_WHITESPACE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_OTHER_NEUTRALS`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_POP_DIRECTIONAL_FORMAT`

#### public static byte
**getDirectionality**
(int codePoint)

Returns the Unicode directionality property for the given
character (Unicode code point). Character directionality is
used to calculate the visual ordering of text. The
directionality value of undefined character is `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_UNDEFINED`.

##### Parameters

| codePoint | the character (Unicode code point) for which the directionality property is requested. |
|---|---|

##### Returns

- the directionality property of the character.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_UNDEFINED`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_ARABIC_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_COMMON_NUMBER_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_NONSPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_BOUNDARY_NEUTRAL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_PARAGRAPH_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_SEGMENT_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_WHITESPACE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_OTHER_NEUTRALS`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DIRECTIONALITY_POP_DIRECTIONAL_FORMAT`

#### public static [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getName**
(int codePoint)

Returns the Unicode name of the specified character
`codePoint`, or null if the code point is
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UNASSIGNED`.


Note: if the specified character is not assigned a name by
the *UnicodeData* file (part of the Unicode Character
Database maintained by the Unicode Consortium), the returned
name is the same as the result of expression.

> `Character.UnicodeBlock.of(codePoint).toString().replace('_', ' ')
> + " "
> + Integer.toHexString(codePoint).toUpperCase(Locale.ENGLISH);
>
> `

<br />

##### Parameters

| codePoint | the character (Unicode code point) |
|---|---|

##### Returns

- the Unicode name of the specified character, or null if the code point is unassigned.

##### Throws

| [IllegalArgumentException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IllegalArgumentException.html) | if the specified `codePoint` is not a valid Unicode code point. |
|---|---|

#### public static int
**getNumericValue**
(int codePoint)

Returns the `int` value that the specified
character (Unicode code point) represents. For example, the character
`'\u216C'` (the Roman numeral fifty) will return
an `int` with a value of 50.


The letters A-Z in their uppercase (`'\u0041'` through
`'\u005A'`), lowercase
(`'\u0061'` through `'\u007A'`), and
full width variant (`'\uFF21'` through
`'\uFF3A'` and `'\uFF41'` through
`'\uFF5A'`) forms have numeric values from 10
through 35. This is independent of the Unicode specification,
which does not assign numeric values to these `char`
values.


If the character does not have a numeric value, then -1 is returned.
If the character has a numeric value that cannot be represented as a
nonnegative integer (for example, a fractional value), then -2
is returned.

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
|---|---|

##### Returns

- the numeric value of the character, as a nonnegative `int` value; -2 if the character has a numeric value that is not a nonnegative integer; -1 if the character has no numeric value.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)`

#### public static int
**getNumericValue**
(char ch)

Returns the `int` value that the specified Unicode
character represents. For example, the character
`'\u216C'` (the roman numeral fifty) will return
an int with a value of 50.


The letters A-Z in their uppercase (`'\u0041'` through
`'\u005A'`), lowercase
(`'\u0061'` through `'\u007A'`), and
full width variant (`'\uFF21'` through
`'\uFF3A'` and `'\uFF41'` through
`'\uFF5A'`) forms have numeric values from 10
through 35. This is independent of the Unicode specification,
which does not assign numeric values to these `char`
values.


If the character does not have a numeric value, then -1 is returned.
If the character has a numeric value that cannot be represented as a
nonnegative integer (for example, a fractional value), then -2
is returned.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getNumericValue(int)` method.

##### Parameters

| ch | the character to be converted. |
|---|---|

##### Returns

- the numeric value of the character, as a nonnegative `int` value; -2 if the character has a numeric value that is not a nonnegative integer; -1 if the character has no numeric value.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char)`

#### public static int
**getType**
(char ch)

Returns a value indicating a character's general category.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- a value of type `int` representing the character's general category.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#COMBINING_SPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONNECTOR_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONTROL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CURRENCY_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DASH_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DECIMAL_DIGIT_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#ENCLOSING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#END_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FINAL_QUOTE_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FORMAT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#INITIAL_QUOTE_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LETTER_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LINE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LOWERCASE_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MATH_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#NON_SPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PARAGRAPH_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PRIVATE_USE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SPACE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#START_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SURROGATE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#TITLECASE_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UNASSIGNED`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UPPERCASE_LETTER`

#### public static int
**getType**
(int codePoint)

Returns a value indicating a character's general category.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- a value of type `int` representing the character's general category.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#COMBINING_SPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONNECTOR_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CONTROL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#CURRENCY_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DASH_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#DECIMAL_DIGIT_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#ENCLOSING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#END_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FINAL_QUOTE_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#FORMAT`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#INITIAL_QUOTE_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LETTER_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LINE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LOWERCASE_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MATH_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MODIFIER_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#NON_SPACING_MARK`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_NUMBER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#OTHER_SYMBOL`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PARAGRAPH_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PRIVATE_USE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SPACE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#START_PUNCTUATION`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SURROGATE`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#TITLECASE_LETTER`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UNASSIGNED`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#UPPERCASE_LETTER`

#### public static int
**hashCode**
(char value)

Returns a hash code for a `char` value; compatible with
`Character.hashCode()`.

##### Parameters

| value | The `char` for which to return a hash code. |
|---|---|

##### Returns

- a hash code value for a `char` value.

#### public int
**hashCode**
()

Returns a hash code for this `Character`; equal to the result
of invoking `charValue()`.

##### Returns

- a hash code value for this `Character`

#### public static char
**highSurrogate**
(int codePoint)

Returns the leading surrogate (a
[high surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit)) of the
[surrogate pair](http://www.unicode.org/glossary/#surrogate_pair)
representing the specified supplementary character (Unicode
code point) in the UTF-16 encoding. If the specified character
is not a
[supplementary character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary),
an unspecified `char` is returned.

If
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSupplementaryCodePoint(int)`
is `true`, then
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isHighSurrogate(char)``(highSurrogate(x))` and
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toCodePoint(char,%20char)``(highSurrogate(x), ``https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#lowSurrogate(int)``(x)) == x`
are also always `true`.

##### Parameters

| codePoint | a supplementary character (Unicode code point) |
|---|---|

##### Returns

- the leading surrogate code unit used to represent the character in the UTF-16 encoding

#### public static boolean
**isAlphabetic**
(int codePoint)

Determines if the specified character (Unicode code point) is an alphabet.


A character is considered to be alphabetic if its general category type,
provided by `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`, is any of
the following:

- `UPPERCASE_LETTER`
- `LOWERCASE_LETTER`
- `TITLECASE_LETTER`
- `MODIFIER_LETTER`
- `OTHER_LETTER`
- `LETTER_NUMBER`

or it has contributory property Other_Alphabetic as defined by the Unicode Standard.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a Unicode alphabet character, `false` otherwise.

#### public static boolean
**isBmpCodePoint**
(int codePoint)

Determines whether the specified character (Unicode code point)
is in the [Basic Multilingual Plane (BMP)](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#BMP).
Such code points can be represented using a single `char`.

##### Parameters

| codePoint | the character (Unicode code point) to be tested |
|---|---|

##### Returns

- `true` if the specified code point is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_VALUE` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_VALUE` inclusive; `false` otherwise.

#### public static boolean
**isDefined**
(int codePoint)

Determines if a character (Unicode code point) is defined in Unicode.


A character is defined if at least one of the following is true:

- It has an entry in the UnicodeData file.
- It has a value in a range defined by the UnicodeData file.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character has a defined meaning in Unicode; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int)`

#### public static boolean
**isDefined**
(char ch)

Determines if a character is defined in Unicode.


A character is defined if at least one of the following is true:

- It has an entry in the UnicodeData file.
- It has a value in a range defined by the UnicodeData file.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDefined(int)` method.

##### Parameters

| ch | the character to be tested |
|---|---|

##### Returns

- `true` if the character has a defined meaning in Unicode; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(char)`

#### public static boolean
**isDigit**
(char ch)

Determines if the specified character is a digit.


A character is a digit if its general category type, provided
by `Character.getType(ch)`, is
`DECIMAL_DIGIT_NUMBER`.


Some Unicode character ranges that contain digits:

- `'\u0030'` through `'\u0039'`, ISO-LATIN-1 digits (`'0'` through `'9'`)
- `'\u0660'` through `'\u0669'`, Arabic-Indic digits
- `'\u06F0'` through `'\u06F9'`, Extended Arabic-Indic digits
- `'\u0966'` through `'\u096F'`, Devanagari digits
- `'\uFF10'` through `'\uFF19'`, Fullwidth digits

Many other character ranges contain digits as well.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is a digit; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#digit(char,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)`

#### public static boolean
**isDigit**
(int codePoint)

Determines if the specified character (Unicode code point) is a digit.


A character is a digit if its general category type, provided
by `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`, is
`DECIMAL_DIGIT_NUMBER`.


Some Unicode character ranges that contain digits:

- `'\u0030'` through `'\u0039'`, ISO-LATIN-1 digits (`'0'` through `'9'`)
- `'\u0660'` through `'\u0669'`, Arabic-Indic digits
- `'\u06F0'` through `'\u06F9'`, Extended Arabic-Indic digits
- `'\u0966'` through `'\u096F'`, Devanagari digits
- `'\uFF10'` through `'\uFF19'`, Fullwidth digits

Many other character ranges contain digits as well.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a digit; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#forDigit(int,%20int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`

#### public static boolean
**isHighSurrogate**
(char ch)

Determines if the given `char` value is a
[Unicode high-surrogate code unit](http://www.unicode.org/glossary/#high_surrogate_code_unit)
(also known as *leading-surrogate code unit*).

Such values do not represent characters by themselves,
but are used in the representation of
[supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary)
in the UTF-16 encoding.

##### Parameters

| ch | the `char` value to be tested. |
|---|---|

##### Returns

- `true` if the `char` value is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_HIGH_SURROGATE` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_HIGH_SURROGATE` inclusive; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowSurrogate(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.UnicodeBlock.html#of(int)`

#### public static boolean
**isISOControl**
(char ch)

Determines if the specified character is an ISO control
character. A character is considered to be an ISO control
character if its code is in the range `'\u0000'`
through `'\u001F'` or in the range
`'\u007F'` through `'\u009F'`.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isISOControl(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is an ISO control character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(char)`

#### public static boolean
**isISOControl**
(int codePoint)

Determines if the referenced character (Unicode code point) is an ISO control
character. A character is considered to be an ISO control
character if its code is in the range `'\u0000'`
through `'\u001F'` or in the range
`'\u007F'` through `'\u009F'`.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is an ISO control character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(int)`

#### public static boolean
**isIdentifierIgnorable**
(char ch)

Determines if the specified character should be regarded as
an ignorable character in a Java identifier or a Unicode identifier.


The following Unicode characters are ignorable in a Java identifier
or a Unicode identifier:

- ISO control characters that are not whitespace
  - `'\u0000'` through `'\u0008'`
  - `'\u000E'` through `'\u001B'`
  - `'\u007F'` through `'\u009F'`
- all characters that have the `FORMAT` general category value

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is an ignorable control character that may be part of a Java or Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char)`

#### public static boolean
**isIdentifierIgnorable**
(int codePoint)

Determines if the specified character (Unicode code point) should be regarded as
an ignorable character in a Java identifier or a Unicode identifier.


The following Unicode characters are ignorable in a Java identifier
or a Unicode identifier:

- ISO control characters that are not whitespace
  - `'\u0000'` through `'\u0008'`
  - `'\u000E'` through `'\u001B'`
  - `'\u007F'` through `'\u009F'`
- all characters that have the `FORMAT` general category value

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is an ignorable control character that may be part of a Java or Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int)`

#### public static boolean
**isIdeographic**
(int codePoint)

Determines if the specified character (Unicode code point) is a CJKV
(Chinese, Japanese, Korean and Vietnamese) ideograph, as defined by
the Unicode Standard.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a Unicode ideograph character, `false` otherwise.

#### public static boolean
**isJavaIdentifierPart**
(char ch)

Determines if the specified character may be part of a Java
identifier as other than the first character.


A character may be part of a Java identifier if any of the following
are true:

- it is a letter
- it is a currency symbol (such as `'$'`)
- it is a connecting punctuation character (such as `'_'`)
- it is a digit
- it is a numeric letter (such as a Roman numeral character)
- it is a combining mark
- it is a non-spacing mark
- `isIdentifierIgnorable` returns `true` for the character

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may be part of a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/`

#### public static boolean
**isJavaIdentifierPart**
(int codePoint)

Determines if the character (Unicode code point) may be part of a Java
identifier as other than the first character.


A character may be part of a Java identifier if any of the following
are true:

- it is a letter
- it is a currency symbol (such as `'$'`)
- it is a connecting punctuation character (such as `'_'`)
- it is a digit
- it is a numeric letter (such as a Roman numeral character)
- it is a combining mark
- it is a non-spacing mark
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(int)` returns `true` for the character

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character may be part of a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/`

#### public static boolean
**isJavaIdentifierStart**
(int codePoint)

Determines if the character (Unicode code point) is
permissible as the first character in a Java identifier.


A character may start a Java identifier if and only if
one of the following conditions is true:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)` returns `true`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)` returns `LETTER_NUMBER`
- the referenced character is a currency symbol (such as `'$'`)
- the referenced character is a connecting punctuation character (such as `'_'`).

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character may start a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/`

#### public static boolean
**isJavaIdentifierStart**
(char ch)

Determines if the specified character is
permissible as the first character in a Java identifier.


A character may start a Java identifier if and only if
one of the following conditions is true:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)` returns `true`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)` returns `LETTER_NUMBER`
- `ch` is a currency symbol (such as `'$'`)
- `ch` is a connecting punctuation character (such as `'_'`).

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may start a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/`

#### public static boolean
**isJavaLetter**
(char ch)


**This method is deprecated.**   
Replaced by isJavaIdentifierStart(char).

Determines if the specified character is permissible as the first
character in a Java identifier.


A character may start a Java identifier if and only if
one of the following is true:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)` returns `true`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)` returns `LETTER_NUMBER`
- `ch` is a currency symbol (such as `'$'`)
- `ch` is a connecting punctuation character (such as `'_'`).

<br />

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may start a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(char)`

#### public static boolean
**isJavaLetterOrDigit**
(char ch)


**This method is deprecated.**   
Replaced by isJavaIdentifierPart(char).

Determines if the specified character may be part of a Java
identifier as other than the first character.


A character may be part of a Java identifier if and only if any
of the following are true:

- it is a letter
- it is a currency symbol (such as `'$'`)
- it is a connecting punctuation character (such as `'_'`)
- it is a digit
- it is a numeric letter (such as a Roman numeral character)
- it is a combining mark
- it is a non-spacing mark
- `isIdentifierIgnorable` returns `true` for the character.

<br />

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may be part of a Java identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(char)`

#### public static boolean
**isLetter**
(char ch)

Determines if the specified character is a letter.


A character is considered to be a letter if its general
category type, provided by `Character.getType(ch)`,
is any of the following:

- `UPPERCASE_LETTER`
- `LOWERCASE_LETTER`
- `TITLECASE_LETTER`
- `MODIFIER_LETTER`
- `OTHER_LETTER`

Not all letters have case. Many characters are letters but are neither uppercase nor lowercase nor titlecase.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is a letter; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(char)`

#### public static boolean
**isLetter**
(int codePoint)

Determines if the specified character (Unicode code point) is a letter.


A character is considered to be a letter if its general
category type, provided by `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`,
is any of the following:

- `UPPERCASE_LETTER`
- `LOWERCASE_LETTER`
- `TITLECASE_LETTER`
- `MODIFIER_LETTER`
- `OTHER_LETTER`

Not all letters have case. Many characters are letters but are neither uppercase nor lowercase nor titlecase.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a letter; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int)`

#### public static boolean
**isLetterOrDigit**
(char ch)

Determines if the specified character is a letter or digit.


A character is considered to be a letter or digit if either
`Character.isLetter(char ch)` or
`Character.isDigit(char ch)` returns
`true` for the character.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is a letter or digit; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char)`

#### public static boolean
**isLetterOrDigit**
(int codePoint)

Determines if the specified character (Unicode code point) is a letter or digit.


A character is considered to be a letter or digit if either
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)` or
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)` returns
`true` for the character.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a letter or digit; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int)`

#### public static boolean
**isLowSurrogate**
(char ch)

Determines if the given `char` value is a
[Unicode low-surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit)
(also known as *trailing-surrogate code unit*).

Such values do not represent characters by themselves,
but are used in the representation of
[supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary)
in the UTF-16 encoding.

##### Parameters

| ch | the `char` value to be tested. |
|---|---|

##### Returns

- `true` if the `char` value is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_LOW_SURROGATE` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_LOW_SURROGATE` inclusive; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isHighSurrogate(char)`

#### public static boolean
**isLowerCase**
(char ch)

Determines if the specified character is a lowercase character.


A character is lowercase if its general category type, provided
by `Character.getType(ch)`, is
`LOWERCASE_LETTER`, or it has contributory property
Other_Lowercase as defined by the Unicode Standard.


The following are examples of lowercase characters:
>
> ```
>  a b c d e f g h i j k l m n o p q r s t u v w x y z
>  '\u00DF' '\u00E0' '\u00E1' '\u00E2' '\u00E3' '\u00E4' '\u00E5' '\u00E6'
>  '\u00E7' '\u00E8' '\u00E9' '\u00EA' '\u00EB' '\u00EC' '\u00ED' '\u00EE'
>  '\u00EF' '\u00F0' '\u00F1' '\u00F2' '\u00F3' '\u00F4' '\u00F5' '\u00F6'
>  '\u00F8' '\u00F9' '\u00FA' '\u00FB' '\u00FC' '\u00FD' '\u00FE' '\u00FF'
>  
> ```

Many other Unicode characters are lowercase too.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is lowercase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)`

#### public static boolean
**isLowerCase**
(int codePoint)

Determines if the specified character (Unicode code point) is a
lowercase character.


A character is lowercase if its general category type, provided
by `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)`, is
`LOWERCASE_LETTER`, or it has contributory property
Other_Lowercase as defined by the Unicode Standard.


The following are examples of lowercase characters:
>
> ```
>  a b c d e f g h i j k l m n o p q r s t u v w x y z
>  '\u00DF' '\u00E0' '\u00E1' '\u00E2' '\u00E3' '\u00E4' '\u00E5' '\u00E6'
>  '\u00E7' '\u00E8' '\u00E9' '\u00EA' '\u00EB' '\u00EC' '\u00ED' '\u00EE'
>  '\u00EF' '\u00F0' '\u00F1' '\u00F2' '\u00F3' '\u00F4' '\u00F5' '\u00F6'
>  '\u00F8' '\u00F9' '\u00FA' '\u00FB' '\u00FC' '\u00FD' '\u00FE' '\u00FF'
>  
> ```

Many other Unicode characters are lowercase too.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is lowercase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`

#### public static boolean
**isMirrored**
(int codePoint)

Determines whether the specified character (Unicode code point)
is mirrored according to the Unicode specification. Mirrored
characters should have their glyphs horizontally mirrored when
displayed in text that is right-to-left. For example,
`'\u0028'` LEFT PARENTHESIS is semantically
defined to be an *opening parenthesis*. This will appear
as a "(" in text that is left-to-right but as a ")" in text
that is right-to-left.

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is mirrored, `false` if the character is not mirrored or is not defined.

#### public static boolean
**isMirrored**
(char ch)

Determines whether the character is mirrored according to the
Unicode specification. Mirrored characters should have their
glyphs horizontally mirrored when displayed in text that is
right-to-left. For example, `'\u0028'` LEFT
PARENTHESIS is semantically defined to be an *opening parenthesis*. This will appear as a "(" in text that is
left-to-right but as a ")" in text that is right-to-left.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isMirrored(int)` method.

##### Parameters

| ch | `char` for which the mirrored property is requested |
|---|---|

##### Returns

- `true` if the char is mirrored, `false` if the `char` is not mirrored or is not defined.

#### public static boolean
**isSpace**
(char ch)


**This method is deprecated.**   
Replaced by isWhitespace(char).

Determines if the specified character is ISO-LATIN-1 white space.
This method returns `true` for the following five
characters only:

|---|---|---|
| `'\t'` | `U+0009` | `HORIZONTAL TABULATION` |
| `'\n'` | `U+000A` | `NEW LINE` |
| `'\f'` | `U+000C` | `FORM FEED` |
| `'\r'` | `U+000D` | `CARRIAGE RETURN` |
| `'&nbsp;'` | `U+0020` | `SPACE` |

<br />

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is ISO-LATIN-1 white space; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(char)`

#### public static boolean
**isSpaceChar**
(char ch)

Determines if the specified character is a Unicode space character.
A character is considered to be a space character if and only if
it is specified to be a space character by the Unicode Standard. This
method returns true if the character's general category type is any of
the following:

- `SPACE_SEPARATOR`
- `LINE_SEPARATOR`
- `PARAGRAPH_SEPARATOR`

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is a space character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(char)`

#### public static boolean
**isSpaceChar**
(int codePoint)

Determines if the specified character (Unicode code point) is a
Unicode space character. A character is considered to be a
space character if and only if it is specified to be a space
character by the Unicode Standard. This method returns true if
the character's general category type is any of the following:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SPACE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LINE_SEPARATOR`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PARAGRAPH_SEPARATOR`

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a space character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(int)`

#### public static boolean
**isSupplementaryCodePoint**
(int codePoint)

Determines whether the specified character (Unicode code point)
is in the [supplementary character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary) range.

##### Parameters

| codePoint | the character (Unicode code point) to be tested |
|---|---|

##### Returns

- `true` if the specified code point is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_SUPPLEMENTARY_CODE_POINT` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_CODE_POINT` inclusive; `false` otherwise.

#### public static boolean
**isSurrogate**
(char ch)

Determines if the given `char` value is a Unicode
*surrogate code unit*.

Such values do not represent characters by themselves,
but are used in the representation of
[supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary)
in the UTF-16 encoding.

A char value is a surrogate code unit if and only if it is either
a {@linkplain #isLowSurrogate(char) low-surrogate code unit} or
a {@linkplain #isHighSurrogate(char) high-surrogate code unit}.

##### Parameters

| ch | the `char` value to be tested. |
|---|---|

##### Returns

- `true` if the `char` value is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_SURROGATE` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_SURROGATE` inclusive; `false` otherwise.

#### public static boolean
**isSurrogatePair**
(char high, char low)

Determines whether the specified pair of `char`
values is a valid
[Unicode surrogate pair](http://www.unicode.org/glossary/#surrogate_pair).

This method is equivalent to the expression:
>
>     isHighSurrogate(high) && isLowSurrogate(low)
>      
<br />

##### Parameters

| high | the high-surrogate code value to be tested |
| low | the low-surrogate code value to be tested |
|---|---|

##### Returns

- `true` if the specified high and low-surrogate code values represent a valid surrogate pair; `false` otherwise.

#### public static boolean
**isTitleCase**
(int codePoint)

Determines if the specified character (Unicode code point) is a titlecase character.


A character is a titlecase character if its general
category type, provided by `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`,
is `TITLECASE_LETTER`.


Some characters look like pairs of Latin letters. For example, there
is an uppercase letter that looks like "LJ" and has a corresponding
lowercase letter that looks like "lj". A third form, which looks like "Lj",
is the appropriate form to use when rendering a word in lowercase
with initial capitals, as for a book title.


These are some of the Unicode characters for which this method returns
`true`:

- `LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON`
- `LATIN CAPITAL LETTER L WITH SMALL LETTER J`
- `LATIN CAPITAL LETTER N WITH SMALL LETTER J`
- `LATIN CAPITAL LETTER D WITH SMALL LETTER Z`

Many other Unicode characters are titlecase too.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is titlecase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`

#### public static boolean
**isTitleCase**
(char ch)

Determines if the specified character is a titlecase character.


A character is a titlecase character if its general
category type, provided by `Character.getType(ch)`,
is `TITLECASE_LETTER`.


Some characters look like pairs of Latin letters. For example, there
is an uppercase letter that looks like "LJ" and has a corresponding
lowercase letter that looks like "lj". A third form, which looks like "Lj",
is the appropriate form to use when rendering a word in lowercase
with initial capitals, as for a book title.


These are some of the Unicode characters for which this method returns
`true`:

- `LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON`
- `LATIN CAPITAL LETTER L WITH SMALL LETTER J`
- `LATIN CAPITAL LETTER N WITH SMALL LETTER J`
- `LATIN CAPITAL LETTER D WITH SMALL LETTER Z`

Many other Unicode characters are titlecase too.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is titlecase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)`

#### public static boolean
**isUnicodeIdentifierPart**
(int codePoint)

Determines if the specified character (Unicode code point) may be part of a Unicode
identifier as other than the first character.


A character may be part of a Unicode identifier if and only if
one of the following statements is true:

- it is a letter
- it is a connecting punctuation character (such as `'_'`)
- it is a digit
- it is a numeric letter (such as a Roman numeral character)
- it is a combining mark
- it is a non-spacing mark
- `isIdentifierIgnorable` returns `true` for this character.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character may be part of a Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(int)`

#### public static boolean
**isUnicodeIdentifierPart**
(char ch)

Determines if the specified character may be part of a Unicode
identifier as other than the first character.


A character may be part of a Unicode identifier if and only if
one of the following statements is true:

- it is a letter
- it is a connecting punctuation character (such as `'_'`)
- it is a digit
- it is a numeric letter (such as a Roman numeral character)
- it is a combining mark
- it is a non-spacing mark
- `isIdentifierIgnorable` returns `true` for this character.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may be part of a Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isIdentifierIgnorable(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierPart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetterOrDigit(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(char)`

#### public static boolean
**isUnicodeIdentifierStart**
(int codePoint)

Determines if the specified character (Unicode code point) is permissible as the
first character in a Unicode identifier.


A character may start a Unicode identifier if and only if
one of the following conditions is true:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)` returns `true`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)` returns `LETTER_NUMBER`.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character may start a Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(int)`

#### public static boolean
**isUnicodeIdentifierStart**
(char ch)

Determines if the specified character is permissible as the
first character in a Unicode identifier.


A character may start a Unicode identifier if and only if
one of the following conditions is true:

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)` returns `true`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)` returns `LETTER_NUMBER`.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierStart(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character may start a Unicode identifier; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isJavaIdentifierStart(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLetter(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUnicodeIdentifierPart(char)`

#### public static boolean
**isUpperCase**
(char ch)

Determines if the specified character is an uppercase character.


A character is uppercase if its general category type, provided by
`Character.getType(ch)`, is `UPPERCASE_LETTER`.
or it has contributory property Other_Uppercase as defined by the Unicode Standard.


The following are examples of uppercase characters:
>
> ```
>  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
>  '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
>  '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
>  '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
>  '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
>  
> ```

Many other Unicode characters are uppercase too.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is uppercase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(char)`

#### public static boolean
**isUpperCase**
(int codePoint)

Determines if the specified character (Unicode code point) is an uppercase character.


A character is uppercase if its general category type, provided by
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`, is `UPPERCASE_LETTER`,
or it has contributory property Other_Uppercase as defined by the Unicode Standard.


The following are examples of uppercase characters:
>
> ```
>  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
>  '\u00C0' '\u00C1' '\u00C2' '\u00C3' '\u00C4' '\u00C5' '\u00C6' '\u00C7'
>  '\u00C8' '\u00C9' '\u00CA' '\u00CB' '\u00CC' '\u00CD' '\u00CE' '\u00CF'
>  '\u00D0' '\u00D1' '\u00D2' '\u00D3' '\u00D4' '\u00D5' '\u00D6' '\u00D8'
>  '\u00D9' '\u00DA' '\u00DB' '\u00DC' '\u00DD' '\u00DE'
>  
> ```

Many other Unicode characters are uppercase too.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is uppercase; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#getType(int)`

#### public static boolean
**isValidCodePoint**
(int codePoint)

Determines whether the specified code point is a valid
[Unicode code point value](http://www.unicode.org/glossary/#code_point).

##### Parameters

| codePoint | the Unicode code point to be tested |
|---|---|

##### Returns

- `true` if the specified code point value is between `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MIN_CODE_POINT` and `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#MAX_CODE_POINT` inclusive; `false` otherwise.

#### public static boolean
**isWhitespace**
(int codePoint)

Determines if the specified character (Unicode code point) is
white space according to Java. A character is a Java
whitespace character if and only if it satisfies one of the
following criteria:

- It is a Unicode space character (`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#SPACE_SEPARATOR`, `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#LINE_SEPARATOR`, or `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#PARAGRAPH_SEPARATOR`) but is not also a non-breaking space (`'\u00A0'`, `'\u2007'`, `'\u202F'`).
- It is `'\t'`, U+0009 HORIZONTAL TABULATION.
- It is `'\n'`, U+000A LINE FEED.
- It is `'\u000B'`, U+000B VERTICAL TABULATION.
- It is `'\f'`, U+000C FORM FEED.
- It is `'\r'`, U+000D CARRIAGE RETURN.
- It is `'\u001C'`, U+001C FILE SEPARATOR.
- It is `'\u001D'`, U+001D GROUP SEPARATOR.
- It is `'\u001E'`, U+001E RECORD SEPARATOR.
- It is `'\u001F'`, U+001F UNIT SEPARATOR.

<br />

##### Parameters

| codePoint | the character (Unicode code point) to be tested. |
|---|---|

##### Returns

- `true` if the character is a Java whitespace character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(int)`

#### public static boolean
**isWhitespace**
(char ch)

Determines if the specified character is white space according to Java.
A character is a Java whitespace character if and only if it satisfies
one of the following criteria:

- It is a Unicode space character (`SPACE_SEPARATOR`, `LINE_SEPARATOR`, or `PARAGRAPH_SEPARATOR`) but is not also a non-breaking space (`'\u00A0'`, `'\u2007'`, `'\u202F'`).
- It is `'\t'`, U+0009 HORIZONTAL TABULATION.
- It is `'\n'`, U+000A LINE FEED.
- It is `'\u000B'`, U+000B VERTICAL TABULATION.
- It is `'\f'`, U+000C FORM FEED.
- It is `'\r'`, U+000D CARRIAGE RETURN.
- It is `'\u001C'`, U+001C FILE SEPARATOR.
- It is `'\u001D'`, U+001D GROUP SEPARATOR.
- It is `'\u001E'`, U+001E RECORD SEPARATOR.
- It is `'\u001F'`, U+001F UNIT SEPARATOR.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isWhitespace(int)` method.

##### Parameters

| ch | the character to be tested. |
|---|---|

##### Returns

- `true` if the character is a Java whitespace character; `false` otherwise.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSpaceChar(char)`

#### public static char
**lowSurrogate**
(int codePoint)

Returns the trailing surrogate (a
[low surrogate code unit](http://www.unicode.org/glossary/#low_surrogate_code_unit)) of the
[surrogate pair](http://www.unicode.org/glossary/#surrogate_pair)
representing the specified supplementary character (Unicode
code point) in the UTF-16 encoding. If the specified character
is not a
[supplementary character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary),
an unspecified `char` is returned.

If
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSupplementaryCodePoint(int)`
is `true`, then
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowSurrogate(char)``(lowSurrogate(x))` and
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toCodePoint(char,%20char)``(``https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#highSurrogate(int)``(x), lowSurrogate(x)) == x`
are also always `true`.

##### Parameters

| codePoint | a supplementary character (Unicode code point) |
|---|---|

##### Returns

- the trailing surrogate code unit used to represent the character in the UTF-16 encoding

#### public static int
**offsetByCodePoints**
([CharSequence](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/CharSequence.html) seq, int index, int codePointOffset)

Returns the index within the given char sequence that is offset
from the given `index` by `codePointOffset`
code points. Unpaired surrogates within the text range given by
`index` and `codePointOffset` count as
one code point each.

##### Parameters

| seq | the char sequence |
| index | the index to be offset |
| codePointOffset | the offset in code points |
|---|---|

##### Returns

- the index within the char sequence

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `seq` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if `index` is negative or larger then the length of the char sequence, or if `codePointOffset` is positive and the subsequence starting with `index` has fewer than `codePointOffset` code points, or if `codePointOffset` is negative and the subsequence before `index` has fewer than the absolute value of `codePointOffset` code points. |
|---|---|

#### public static int
**offsetByCodePoints**
(char\[\] a, int start, int count, int index, int codePointOffset)

Returns the index within the given `char` subarray
that is offset from the given `index` by
`codePointOffset` code points. The
`start` and `count` arguments specify a
subarray of the `char` array. Unpaired surrogates
within the text range given by `index` and
`codePointOffset` count as one code point each.

##### Parameters

| a | the `char` array |
| start | the index of the first `char` of the subarray |
| count | the length of the subarray in `char`s |
| index | the index to be offset |
| codePointOffset | the offset in code points |
|---|---|

##### Returns

- the index within the subarray

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `a` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if `start` or `count` is negative, or if `start + count` is larger than the length of the given array, or if `index` is less than `start` or larger then `start + count`, or if `codePointOffset` is positive and the text range starting with `index` and ending with `start + count - 1` has fewer than `codePointOffset` code points, or if `codePointOffset` is negative and the text range starting with `start` and ending with `index - 1` has fewer than the absolute value of `codePointOffset` code points. |
|---|---|

#### public static char
**reverseBytes**
(char ch)

Returns the value obtained by reversing the order of the bytes in the
specified char value.

##### Parameters

| ch | The `char` of which to reverse the byte order. |
|---|---|

##### Returns

- the value obtained by reversing (or, equivalently, swapping) the bytes in the specified char value.

#### public static int
**toChars**
(int codePoint, char\[\] dst, int dstIndex)

Converts the specified character (Unicode code point) to its
UTF-16 representation. If the specified code point is a BMP
(Basic Multilingual Plane or Plane 0) value, the same value is
stored in `dst[dstIndex]`, and 1 is returned. If the
specified code point is a supplementary character, its
surrogate values are stored in `dst[dstIndex]`
(high-surrogate) and `dst[dstIndex+1]`
(low-surrogate), and 2 is returned.

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
| dst | an array of `char` in which the `codePoint`'s UTF-16 value is stored. |
| dstIndex | the start index into the `dst` array where the converted value is stored. |
|---|---|

##### Returns

- 1 if the code point is a BMP code point, 2 if the code point is a supplementary code point.

##### Throws

| [IllegalArgumentException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IllegalArgumentException.html) | if the specified `codePoint` is not a valid Unicode code point. |
| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if the specified `dst` is null. |
| [IndexOutOfBoundsException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IndexOutOfBoundsException.html) | if `dstIndex` is negative or not less than `dst.length`, or if `dst` at `dstIndex` doesn't have enough array element(s) to store the resulting `char` value(s). (If `dstIndex` is equal to `dst.length-1` and the specified `codePoint` is a supplementary character, the high-surrogate value is not stored in `dst[dstIndex]`.) |
|---|---|

#### public static char\[\]
**toChars**
(int codePoint)

Converts the specified character (Unicode code point) to its
UTF-16 representation stored in a `char` array. If
the specified code point is a BMP (Basic Multilingual Plane or
Plane 0) value, the resulting `char` array has
the same value as `codePoint`. If the specified code
point is a supplementary code point, the resulting
`char` array has the corresponding surrogate pair.

##### Parameters

| codePoint | a Unicode code point |
|---|---|

##### Returns

- a `char` array having `codePoint`'s UTF-16 representation.

##### Throws

| [IllegalArgumentException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IllegalArgumentException.html) | if the specified `codePoint` is not a valid Unicode code point. |
|---|---|

#### public static int
**toCodePoint**
(char high, char low)

Converts the specified surrogate pair to its supplementary code
point value. This method does not validate the specified
surrogate pair. The caller must validate it using `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isSurrogatePair(char,%20char)` if necessary.

##### Parameters

| high | the high-surrogate code unit |
| low | the low-surrogate code unit |
|---|---|

##### Returns

- the supplementary code point composed from the specified surrogate pair.

#### public static int
**toLowerCase**
(int codePoint)

Converts the character (Unicode code point) argument to
lowercase using case mapping information from the UnicodeData
file.

Note that
`Character.isLowerCase(Character.toLowerCase(codePoint))`
does not always return `true` for some ranges of
characters, particularly those that are symbols or ideographs.

In general, `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toLowerCase()` should be used to map
characters to lowercase. `String` case mapping methods
have several benefits over `Character` case mapping methods.
`String` case mapping methods can perform locale-sensitive
mappings, context-sensitive mappings, and 1:M character mappings, whereas
the `Character` case mapping methods cannot.

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
|---|---|

##### Returns

- the lowercase equivalent of the character (Unicode code point), if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toLowerCase()`

#### public static char
**toLowerCase**
(char ch)

Converts the character argument to lowercase using case
mapping information from the UnicodeData file.


Note that
`Character.isLowerCase(Character.toLowerCase(ch))`
does not always return `true` for some ranges of
characters, particularly those that are symbols or ideographs.

In general, `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toLowerCase()` should be used to map
characters to lowercase. `String` case mapping methods
have several benefits over `Character` case mapping methods.
`String` case mapping methods can perform locale-sensitive
mappings, context-sensitive mappings, and 1:M character mappings, whereas
the `Character` case mapping methods cannot.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(int)` method.

##### Parameters

| ch | the character to be converted. |
|---|---|

##### Returns

- the lowercase equivalent of the character, if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toLowerCase()`

#### public [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**toString**
()

Returns a `String` object representing this
`Character`'s value. The result is a string of
length 1 whose sole component is the primitive
`char` value represented by this
`Character` object.

##### Returns

- a string representation of this object.

#### public static [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**toString**
(char c)

Returns a `String` object representing the
specified `char`. The result is a string of length
1 consisting solely of the specified `char`.

##### Parameters

| c | the `char` to be converted |
|---|---|

##### Returns

- the string representation of the specified `char`

#### public static char
**toTitleCase**
(char ch)

Converts the character argument to titlecase using case mapping
information from the UnicodeData file. If a character has no
explicit titlecase mapping and is not itself a titlecase char
according to UnicodeData, then the uppercase mapping is
returned as an equivalent titlecase mapping. If the
`char` argument is already a titlecase
`char`, the same `char` value will be
returned.


Note that
`Character.isTitleCase(Character.toTitleCase(ch))`
does not always return `true` for some ranges of
characters.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toTitleCase(int)` method.

##### Parameters

| ch | the character to be converted. |
|---|---|

##### Returns

- the titlecase equivalent of the character, if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(char)`

#### public static int
**toTitleCase**
(int codePoint)

Converts the character (Unicode code point) argument to titlecase using case mapping
information from the UnicodeData file. If a character has no
explicit titlecase mapping and is not itself a titlecase char
according to UnicodeData, then the uppercase mapping is
returned as an equivalent titlecase mapping. If the
character argument is already a titlecase
character, the same character value will be
returned.

Note that
`Character.isTitleCase(Character.toTitleCase(codePoint))`
does not always return `true` for some ranges of
characters.

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
|---|---|

##### Returns

- the titlecase equivalent of the character, if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isTitleCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toLowerCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(int)`

#### public static char
**toUpperCase**
(char ch)

Converts the character argument to uppercase using case mapping
information from the UnicodeData file.


Note that
`Character.isUpperCase(Character.toUpperCase(ch))`
does not always return `true` for some ranges of
characters, particularly those that are symbols or ideographs.

In general, `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toUpperCase()` should be used to map
characters to uppercase. `String` case mapping methods
have several benefits over `Character` case mapping methods.
`String` case mapping methods can perform locale-sensitive
mappings, context-sensitive mappings, and 1:M character mappings, whereas
the `Character` case mapping methods cannot.

**Note:** This method cannot handle [supplementary characters](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character#supplementary). To support
all Unicode characters, including supplementary characters, use
the `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#toUpperCase(int)` method.

##### Parameters

| ch | the character to be converted. |
|---|---|

##### Returns

- the uppercase equivalent of the character, if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(char)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toUpperCase()`

#### public static int
**toUpperCase**
(int codePoint)

Converts the character (Unicode code point) argument to
uppercase using case mapping information from the UnicodeData
file.

Note that
`Character.isUpperCase(Character.toUpperCase(codePoint))`
does not always return `true` for some ranges of
characters, particularly those that are symbols or ideographs.

In general, `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toUpperCase()` should be used to map
characters to uppercase. `String` case mapping methods
have several benefits over `Character` case mapping methods.
`String` case mapping methods can perform locale-sensitive
mappings, context-sensitive mappings, and 1:M character mappings, whereas
the `Character` case mapping methods cannot.

##### Parameters

| codePoint | the character (Unicode code point) to be converted. |
|---|---|

##### Returns

- the uppercase equivalent of the character, if any; otherwise, the character itself.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#isUpperCase(int)`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html#toUpperCase()`

#### public static [Character](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html)
**valueOf**
(char c)

Returns a Character instance representing the specified
char value.
If a new Character instance is not required, this method
should generally be used in preference to the constructor
`https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Character.html#Character(char)`, as this method is likely to yield
significantly better space and time performance by caching
frequently requested values.

This method will always cache values in the range `'\u0000'` to `'\u007F'`, inclusive, and may
cache other values outside of this range.

##### Parameters

| c | a char value. |
|---|---|

##### Returns

- a Character instance representing c.