Float

public final class Float extends Number
implements Comparable<Float>

The Float class wraps a value of primitive type float in an object. An object of type Float contains a single field whose type is float.

In addition, this class provides several methods for converting a float to a String and a String to a float, as well as other constants and methods useful when dealing with a float.

Constant Summary

int BYTES The number of bytes used to represent a float value.
int MAX_EXPONENT Maximum exponent a finite float variable may have.
float MAX_VALUE A constant holding the largest positive finite value of type float, (2-2-23)·2127.
int MIN_EXPONENT Minimum exponent a normalized float variable may have.
float MIN_NORMAL A constant holding the smallest positive normal value of type float, 2-126.
float MIN_VALUE A constant holding the smallest positive nonzero value of type float, 2-149.
float NEGATIVE_INFINITY A constant holding the negative infinity of type float.
float NaN A constant holding a Not-a-Number (NaN) value of type float.
float POSITIVE_INFINITY A constant holding the positive infinity of type float.
int SIZE The number of bits used to represent a float value.

Field Summary

public static final Class<Float> TYPE The Class instance representing the primitive type float.

Public Constructor Summary

Float(float value)
Constructs a newly allocated Float object that represents the primitive float argument.
Float(double value)
Constructs a newly allocated Float object that represents the argument converted to type float.
Float(String s)
Constructs a newly allocated Float object that represents the floating-point value of type float represented by the string.

Public Method Summary

byte
byteValue()
Returns the value of this Float as a byte after a narrowing primitive conversion.
static int
compare(float f1, float f2)
Compares the two specified float values.
int
compareTo(Float anotherFloat)
Compares two Float objects numerically.
double
doubleValue()
Returns the value of this Float as a double after a widening primitive conversion.
boolean
equals(Object obj)
Compares this object against the specified object.
static int
floatToIntBits(float value)
Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "single format" bit layout.
static int
floatToRawIntBits(float value)
Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "single format" bit layout, preserving Not-a-Number (NaN) values.
float
floatValue()
Returns the float value of this Float object.
int
hashCode()
Returns a hash code for this Float object.
static int
hashCode(float value)
Returns a hash code for a float value; compatible with Float.hashCode().
static float
intBitsToFloat(int bits)
Returns the float value corresponding to a given bit representation.
int
intValue()
Returns the value of this Float as an int after a narrowing primitive conversion.
static boolean
isFinite(float f)
Returns true if the argument is a finite floating-point value; returns false otherwise (for NaN and infinity arguments).
boolean
isInfinite()
Returns true if this Float value is infinitely large in magnitude, false otherwise.
static boolean
isInfinite(float v)
Returns true if the specified number is infinitely large in magnitude, false otherwise.
static boolean
isNaN(float v)
Returns true if the specified number is a Not-a-Number (NaN) value, false otherwise.
boolean
isNaN()
Returns true if this Float value is a Not-a-Number (NaN), false otherwise.
long
longValue()
Returns value of this Float as a long after a narrowing primitive conversion.
static float
max(float a, float b)
Returns the greater of two float values as if by calling Math.max.
static float
min(float a, float b)
Returns the smaller of two float values as if by calling Math.min.
static float
parseFloat(String s)
Returns a new float initialized to the value represented by the specified String, as performed by the valueOf method of class Float.
short
shortValue()
Returns the value of this Float as a short after a narrowing primitive conversion.
static float
sum(float a, float b)
Adds two float values together as per the + operator.
static String
toHexString(float f)
Returns a hexadecimal string representation of the float argument.
String
toString()
Returns a string representation of this Float object.
static String
toString(float f)
Returns a string representation of the float argument.
static Float
valueOf(String s)
Returns a Float object holding the float value represented by the argument string s.
static Float
valueOf(float f)
Returns a Float instance representing the specified float value.

Inherited Method Summary