Character

public final class Character extends Object
implements Serializable Comparable<Character>

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:

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 points is now U+0000 to U+10FFFF, known as Unicode scalar value. (Refer to the definition 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 characters. 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.

Nested Class Summary

class Character.Subset Instances of this class represent particular subsets of the Unicode character set. 
class Character.UnicodeBlock A family of character subsets representing the character blocks in the Unicode specification. 
enum Character.UnicodeScript A family of character subsets representing the character scripts defined in the Unicode Standard Annex #24: Script Names

Constant Summary

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

Field Summary

public static final Class<Character> TYPE The Class instance representing the primitive type char.

Public Constructor Summary

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

Public Method Summary

static int
charCount(int codePoint)
Determines the number of char values needed to represent the specified character (Unicode code point).
char
charValue()
Returns the value of this Character object.
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.
static int
codePointAt(char[] a, int index)
Returns the code point at the given index of the char array.
static int
codePointAt(CharSequence seq, int index)
Returns the code point at the given index of the CharSequence.
static int
codePointBefore(char[] a, int index)
Returns the code point preceding the given index of the char array.
static int
codePointBefore(CharSequence seq, int index)
Returns the code point preceding the given index of the CharSequence.
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.
static int
codePointCount(CharSequence seq, int beginIndex, int endIndex)
Returns the number of Unicode code points in the text range of the specified char sequence.
static int
codePointCount(char[] a, int offset, int count)
Returns the number of Unicode code points in a subarray of the char array argument.
static int
compare(char x, char y)
Compares two char values numerically.
int
compareTo(Character anotherCharacter)
Compares two Character objects numerically.
static int
digit(int codePoint, int radix)
Returns the numeric value of the specified character (Unicode code point) in the specified radix.
static int
digit(char ch, int radix)
Returns the numeric value of the character ch in the specified radix.
boolean
equals(Object obj)
Compares this object against the specified object.
static char
forDigit(int digit, int radix)
Determines the character representation for a specific digit in the specified radix.
static byte
getDirectionality(char ch)
Returns the Unicode directionality property for the given character.
static byte
getDirectionality(int codePoint)
Returns the Unicode directionality property for the given character (Unicode code point).
static String
getName(int codePoint)
Returns the Unicode name of the specified character codePoint, or null if the code point is unassigned.
static int
getNumericValue(int codePoint)
Returns the int value that the specified character (Unicode code point) represents.
static int
getNumericValue(char ch)
Returns the int value that the specified Unicode character represents.
static int
getType(char ch)
Returns a value indicating a character's general category.
static int
getType(int codePoint)
Returns a value indicating a character's general category.
static int
hashCode(char value)
Returns a hash code for a char value; compatible with Character.hashCode().
int
hashCode()
Returns a hash code for this Character; equal to the result of invoking charValue().
static char
highSurrogate(int codePoint)
Returns the leading surrogate (a high surrogate code unit) of the surrogate pair representing the specified supplementary character (Unicode code point) in the UTF-16 encoding.
static boolean
isAlphabetic(int codePoint)
Determines if the specified character (Unicode code point) is an alphabet.
static boolean
isBmpCodePoint(int codePoint)
Determines whether the specified character (Unicode code point) is in the Basic Multilingual Plane (BMP).
static boolean
isDefined(int codePoint)
Determines if a character (Unicode code point) is defined in Unicode.
static boolean
isDefined(char ch)
Determines if a character is defined in Unicode.
static boolean
isDigit(char ch)
Determines if the specified character is a digit.
static boolean
isDigit(int codePoint)
Determines if the specified character (Unicode code point) is a digit.
static boolean
isHighSurrogate(char ch)
Determines if the given char value is a Unicode high-surrogate code unit (also known as leading-surrogate code unit).
static boolean
isISOControl(char ch)
Determines if the specified character is an ISO control character.
static boolean
isISOControl(int codePoint)
Determines if the referenced character (Unicode code point) is an ISO control character.
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.
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.
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.
static boolean
isJavaIdentifierPart(char ch)
Determines if the specified character may be part of a Java identifier as other than the first character.
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.
static boolean
isJavaIdentifierStart(int codePoint)
Determines if the character (Unicode code point) is permissible as the first character in a Java identifier.
static boolean
isJavaIdentifierStart(char ch)
Determines if the specified character is permissible as the first character in a Java identifier.
static boolean
isJavaLetter(char ch)
This method is deprecated. Replaced by isJavaIdentifierStart(char).
static boolean
isJavaLetterOrDigit(char ch)
This method is deprecated. Replaced by isJavaIdentifierPart(char).
static boolean
isLetter(char ch)
Determines if the specified character is a letter.
static boolean
isLetter(int codePoint)
Determines if the specified character (Unicode code point) is a letter.
static boolean
isLetterOrDigit(char ch)
Determines if the specified character is a letter or digit.
static boolean
isLetterOrDigit(int codePoint)
Determines if the specified character (Unicode code point) is a letter or digit.
static boolean
isLowSurrogate(char ch)
Determines if the given char value is a Unicode low-surrogate code unit (also known as trailing-surrogate code unit).
static boolean
isLowerCase(char ch)
Determines if the specified character is a lowercase character.
static boolean
isLowerCase(int codePoint)
Determines if the specified character (Unicode code point) is a lowercase character.
static boolean
isMirrored(int codePoint)
Determines whether the specified character (Unicode code point) is mirrored according to the Unicode specification.
static boolean
isMirrored(char ch)
Determines whether the character is mirrored according to the Unicode specification.
static boolean
isSpace(char ch)
This method is deprecated. Replaced by isWhitespace(char).
static boolean
isSpaceChar(char ch)
Determines if the specified character is a Unicode space character.
static boolean
isSpaceChar(int codePoint)
Determines if the specified character (Unicode code point) is a Unicode space character.
static boolean
isSupplementaryCodePoint(int codePoint)
Determines whether the specified character (Unicode code point) is in the supplementary character range.
static boolean
isSurrogate(char ch)
Determines if the given char value is a Unicode surrogate code unit.
static boolean
isSurrogatePair(char high, char low)
Determines whether the specified pair of char values is a valid Unicode surrogate pair.
static boolean
isTitleCase(int codePoint)
Determines if the specified character (Unicode code point) is a titlecase character.
static boolean
isTitleCase(char ch)
Determines if the specified character is a titlecase character.
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.
static boolean
isUnicodeIdentifierPart(char ch)
Determines if the specified character may be part of a Unicode identifier as other than the first character.
static boolean
isUnicodeIdentifierStart(int codePoint)
Determines if the specified character (Unicode code point) is permissible as the first character in a Unicode identifier.
static boolean
isUnicodeIdentifierStart(char ch)
Determines if the specified character is permissible as the first character in a Unicode identifier.
static boolean
isUpperCase(char ch)
Determines if the specified character is an uppercase character.
static boolean
isUpperCase(int codePoint)
Determines if the specified character (Unicode code point) is an uppercase character.
static boolean
isValidCodePoint(int codePoint)
Determines whether the specified code point is a valid Unicode code point value.
static boolean
isWhitespace(int codePoint)
Determines if the specified character (Unicode code point) is white space according to Java.
static boolean
isWhitespace(char ch)
Determines if the specified character is white space according to Java.
static char
lowSurrogate(int codePoint)
Returns the trailing surrogate (a low surrogate code unit) of the surrogate pair representing the specified supplementary character (Unicode code point) in the UTF-16 encoding.
static int
offsetByCodePoints(CharSequence 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(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(char ch)
Returns the value obtained by reversing the order of the bytes in the specified char value.
static int
toChars(int codePoint, char[] dst, int dstIndex)
Converts the specified character (Unicode code point) to its UTF-16 representation.
static char[]
toChars(int codePoint)
Converts the specified character (Unicode code point) to its UTF-16 representation stored in a char array.
static int
toCodePoint(char high, char low)
Converts the specified surrogate pair to its supplementary code point value.
static int
toLowerCase(int codePoint)
Converts the character (Unicode code point) argument to lowercase using case mapping information from the UnicodeData file.
static char
toLowerCase(char ch)
Converts the character argument to lowercase using case mapping information from the UnicodeData file.
String
toString()
Returns a String object representing this Character's value.
static String
toString(char c)
Returns a String object representing the specified char.
static char
toTitleCase(char ch)
Converts the character argument to titlecase using case mapping information from the UnicodeData file.
static int
toTitleCase(int codePoint)
Converts the character (Unicode code point) argument to titlecase using case mapping information from the UnicodeData file.
static char
toUpperCase(char ch)
Converts the character argument to uppercase using case mapping information from the UnicodeData file.
static int
toUpperCase(int codePoint)
Converts the character (Unicode code point) argument to uppercase using case mapping information from the UnicodeData file.
static Character
valueOf(char c)
Returns a Character instance representing the specified char value.

Inherited Method Summary

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, constant U+10FFFF.

Constant Value: 1114111

public static final char MAX_HIGH_SURROGATE

The maximum value of a Unicode 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 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.

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, constant U+0000.

Constant Value: 0

public static final char MIN_HIGH_SURROGATE

The minimum value of a Unicode 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 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.

Constant Value: 2

public static final int MIN_SUPPLEMENTARY_CODE_POINT

The minimum value of a Unicode 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.