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Class Float

java.lang.Object
- java.lang.Number
- - java.lang.Float

All Implemented Interfaces:
Serializable,Comparable<Float>
```
public final classFloatextendsNumberimplementsComparable<Float>
```
TheFloat class wraps a value of primitive typefloat in an object. An object of typeFloat contains a single field whose type isfloat.
In addition, this class provides several methods for converting afloat to aString and aString to afloat, as well as other constants and methods useful when dealing with afloat.
Since:
1.0
See Also:
Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`BYTES`	The number of bytes used to represent a`float` value.
`static int`	`MAX_EXPONENT`	Maximum exponent a finite`float` variable may have.
`static float`	`MAX_VALUE`	A constant holding the largest positive finite value of type`float`, (2-2^-23)·2¹²⁷.
`static int`	`MIN_EXPONENT`	Minimum exponent a normalized`float` variable may have.
`static float`	`MIN_NORMAL`	A constant holding the smallest positive normal value of type`float`, 2^-126.
`static float`	`MIN_VALUE`	A constant holding the smallest positive nonzero value of type`float`, 2^-149.
`static float`	`NaN`	A constant holding a Not-a-Number (NaN) value of type`float`.
`static float`	`NEGATIVE_INFINITY`	A constant holding the negative infinity of type`float`.
`static float`	`POSITIVE_INFINITY`	A constant holding the positive infinity of type`float`.
`static int`	`SIZE`	The number of bits used to represent a`float` value.
`staticClass<Float>`	`TYPE`	The`Class` instance representing the primitive type`float`.

Constructor Summary

Constructors
Constructor	Description
`Float(double value)`	Deprecated. It is rarely appropriate to use this constructor.
`Float(float value)`	Deprecated. It is rarely appropriate to use this constructor.
`Float(String s)`	Deprecated. It is rarely appropriate to use this constructor.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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.
`boolean`	`isNaN()`	Returns`true` if this`Float` value is a Not-a-Number (NaN),`false` otherwise.
`static boolean`	`isNaN(float v)`	Returns`true` if the specified number is a Not-a-Number (NaN) value,`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.
`staticString`	`toHexString(float f)`	Returns a hexadecimal string representation of the`float` argument.
`String`	`toString()`	Returns a string representation of this`Float` object.
`staticString`	`toString(float f)`	Returns a string representation of the`float` argument.
`staticFloat`	`valueOf(float f)`	Returns a`Float` instance representing the specified`float` value.
`staticFloat`	`valueOf(String s)`	Returns a`Float` object holding the`float` value represented by the argument string`s`.

Methods declared in class java.lang.Object
clone,finalize,getClass,notify,notifyAll,wait,wait,wait

Field Detail
- POSITIVE_INFINITY
```
public static final float POSITIVE_INFINITY
```
  A constant holding the positive infinity of typefloat. It is equal to the value returned byFloat.intBitsToFloat(0x7f800000).
  See Also:
  Constant Field Values
- NEGATIVE_INFINITY
```
public static final float NEGATIVE_INFINITY
```
  A constant holding the negative infinity of typefloat. It is equal to the value returned byFloat.intBitsToFloat(0xff800000).
  See Also:
  Constant Field Values
- NaN
```
public static final float NaN
```
  A constant holding a Not-a-Number (NaN) value of typefloat. It is equivalent to the value returned byFloat.intBitsToFloat(0x7fc00000).
  See Also:
  Constant Field Values
- MAX_VALUE
```
public static final float MAX_VALUE
```
  A constant holding the largest positive finite value of typefloat, (2-2^-23)·2¹²⁷. It is equal to the hexadecimal floating-point literal0x1.fffffeP+127f and also equal toFloat.intBitsToFloat(0x7f7fffff).
  See Also:
  Constant Field Values
- MIN_NORMAL
```
public static final float MIN_NORMAL
```
  A constant holding the smallest positive normal value of typefloat, 2^-126. It is equal to the hexadecimal floating-point literal0x1.0p-126f and also equal toFloat.intBitsToFloat(0x00800000).
  Since:
  1.6
  See Also:
  Constant Field Values
- MIN_VALUE
```
public static final float MIN_VALUE
```
  A constant holding the smallest positive nonzero value of typefloat, 2^-149. It is equal to the hexadecimal floating-point literal0x0.000002P-126f and also equal toFloat.intBitsToFloat(0x1).
  See Also:
  Constant Field Values
- MAX_EXPONENT
```
public static final int MAX_EXPONENT
```
  Maximum exponent a finitefloat variable may have. It is equal to the value returned by Math.getExponent(Float.MAX_VALUE).
  Since:
  1.6
  See Also:
  Constant Field Values
- MIN_EXPONENT
```
public static final int MIN_EXPONENT
```
  Minimum exponent a normalizedfloat variable may have. It is equal to the value returned by Math.getExponent(Float.MIN_NORMAL).
  Since:
  1.6
  See Also:
  Constant Field Values
- SIZE
```
public static final int SIZE
```
  The number of bits used to represent afloat value.
  Since:
  1.5
  See Also:
  Constant Field Values
- BYTES
```
public static final int BYTES
```
  The number of bytes used to represent afloat value.
  Since:
  1.8
  See Also:
  Constant Field Values
- TYPE
```
public static final Class<Float> TYPE
```
  TheClass instance representing the primitive typefloat.
  Since:
  1.1

Constructor Detail
- Float
```
@Deprecated(since="9")public Float(float value)
```
  Deprecated.
  It is rarely appropriate to use this constructor. The static factoryvalueOf(float) is generally a better choice, as it is likely to yield significantly better space and time performance.
  Constructs a newly allocatedFloat object that represents the primitivefloat argument.
  Parameters:
  value - the value to be represented by theFloat.
- Float
```
@Deprecated(since="9")public Float(double value)
```
  Deprecated.
  It is rarely appropriate to use this constructor. Instead, use the static factory methodvalueOf(float) method as follows:Float.valueOf((float)value).
  Constructs a newly allocatedFloat object that represents the argument converted to typefloat.
  Parameters:
  value - the value to be represented by theFloat.
- Float
```
@Deprecated(since="9")public Float(String s)      throwsNumberFormatException
```
  Deprecated.
  It is rarely appropriate to use this constructor. UseparseFloat(String) to convert a string to afloat primitive, or usevalueOf(String) to convert a string to aFloat object.
  Constructs a newly allocatedFloat object that represents the floating-point value of typefloat represented by the string. The string is converted to afloat value as if by thevalueOf method.
  Parameters:
  s - a string to be converted to aFloat.
  Throws:
  NumberFormatException - if the string does not contain a parsable number.

Method Detail

toString
```
public static String toString(float f)
```
Returns a string representation of thefloat argument. All characters mentioned below are ASCII characters.
- If the argument is NaN, the result is the string "NaN".
- Otherwise, the result is a string that represents the sign and magnitude (absolute value) of the argument. If the sign is negative, the first character of the result is '-' ('\u002D'); if the sign is positive, no sign character appears in the result. As for the magnitudem:
  - Ifm is infinity, it is represented by the characters"Infinity"; thus, positive infinity produces the result"Infinity" and negative infinity produces the result"-Infinity".
  - Ifm is zero, it is represented by the characters"0.0"; thus, negative zero produces the result"-0.0" and positive zero produces the result"0.0".
  - Ifm is greater than or equal to 10^-3 but less than 10⁷, then it is represented as the integer part ofm, in decimal form with no leading zeroes, followed by '.' ('\u002E'), followed by one or more decimal digits representing the fractional part ofm.
  - Ifm is less than 10^-3 or greater than or equal to 10⁷, then it is represented in so-called "computerized scientific notation." Letn be the unique integer such that 10ⁿ≤m < 10ⁿ⁺¹; then leta be the mathematically exact quotient ofm and 10ⁿ so that 1 ≤a < 10. The magnitude is then represented as the integer part ofa, as a single decimal digit, followed by '.' ('\u002E'), followed by decimal digits representing the fractional part ofa, followed by the letter 'E' ('\u0045'), followed by a representation ofn as a decimal integer, as produced by the methodInteger.toString(int).
How many digits must be printed for the fractional part ofm ora? There must be at least one digit to represent the fractional part, and beyond that as many, but only as many, more digits as are needed to uniquely distinguish the argument value from adjacent values of typefloat. That is, suppose thatx is the exact mathematical value represented by the decimal representation produced by this method for a finite nonzero argumentf. Thenf must be thefloat value nearest tox; or, if twofloat values are equally close tox, thenf must be one of them and the least significant bit of the significand off must be0.
To create localized string representations of a floating-point value, use subclasses ofNumberFormat.
Parameters:
f - the float to be converted.
Returns:
a string representation of the argument.

toHexString

public static String toHexString(float f)

Returns a hexadecimal string representation of thefloat argument. All characters mentioned below are ASCII characters.

If the argument is NaN, the result is the string "NaN".
Otherwise, the result is a string that represents the sign and magnitude (absolute value) of the argument. If the sign is negative, the first character of the result is '-' ('\u002D'); if the sign is positive, no sign character appears in the result. As for the magnitudem:
- Ifm is infinity, it is represented by the string"Infinity"; thus, positive infinity produces the result"Infinity" and negative infinity produces the result"-Infinity".
- Ifm is zero, it is represented by the string"0x0.0p0"; thus, negative zero produces the result"-0x0.0p0" and positive zero produces the result"0x0.0p0".
- Ifm is afloat value with a normalized representation, substrings are used to represent the significand and exponent fields. The significand is represented by the characters"0x1." followed by a lowercase hexadecimal representation of the rest of the significand as a fraction. Trailing zeros in the hexadecimal representation are removed unless all the digits are zero, in which case a single zero is used. Next, the exponent is represented by"p" followed by a decimal string of the unbiased exponent as if produced by a call toInteger.toString on the exponent value.
- Ifm is afloat value with a subnormal representation, the significand is represented by the characters"0x0." followed by a hexadecimal representation of the rest of the significand as a fraction. Trailing zeros in the hexadecimal representation are removed. Next, the exponent is represented by"p-126". Note that there must be at least one nonzero digit in a subnormal significand.

Examples
Floating-point Value	Hexadecimal String
`1.0`	`0x1.0p0`
`-1.0`	`-0x1.0p0`
`2.0`	`0x1.0p1`
`3.0`	`0x1.8p1`
`0.5`	`0x1.0p-1`
`0.25`	`0x1.0p-2`
`Float.MAX_VALUE`	`0x1.fffffep127`
`Minimum Normal Value`	`0x1.0p-126`
`Maximum Subnormal Value`	`0x0.fffffep-126`
`Float.MIN_VALUE`	`0x0.000002p-126`

Parameters:: f - thefloat to be converted.
Returns:: a hex string representation of the argument.
Since:: 1.5

valueOf
```
public static Float valueOf(String s)                     throwsNumberFormatException
```
Returns aFloat object holding thefloat value represented by the argument strings.
Ifs isnull, then aNullPointerException is thrown.
Leading and trailing whitespace characters ins are ignored. Whitespace is removed as if by theString.trim() method; that is, both ASCII space and control characters are removed. The rest ofs should constitute aFloatValue as described by the lexical syntax rules:
FloatValue:
Sign_optNaN
Sign_optInfinity
Sign_opt FloatingPointLiteral
Sign_opt HexFloatingPointLiteral
SignedInteger
HexFloatingPointLiteral:
HexSignificand BinaryExponent FloatTypeSuffix_opt
HexSignificand:
HexNumeral
HexNumeral.
0xHexDigits_opt. HexDigits
0X HexDigits_opt.HexDigits
BinaryExponent:
BinaryExponentIndicator SignedInteger
BinaryExponentIndicator:
p
P
whereSign,FloatingPointLiteral,HexNumeral,HexDigits,SignedInteger andFloatTypeSuffix are as defined in the lexical structure sections ofThe Java™ Language Specification, except that underscores are not accepted between digits. Ifs does not have the form of aFloatValue, then aNumberFormatException is thrown. Otherwise,s is regarded as representing an exact decimal value in the usual "computerized scientific notation" or as an exact hexadecimal value; this exact numerical value is then conceptually converted to an "infinitely precise" binary value that is then rounded to typefloat by the usual round-to-nearest rule of IEEE 754 floating-point arithmetic, which includes preserving the sign of a zero value. Note that the round-to-nearest rule also implies overflow and underflow behaviour; if the exact value ofs is large enough in magnitude (greater than or equal to (MAX_VALUE +ulp(MAX_VALUE)/2), rounding tofloat will result in an infinity and if the exact value ofs is small enough in magnitude (less than or equal toMIN_VALUE/2), rounding to float will result in a zero. Finally, after rounding aFloat object representing thisfloat value is returned.
To interpret localized string representations of a floating-point value, use subclasses ofNumberFormat.
Note that trailing format specifiers, specifiers that determine the type of a floating-point literal (1.0f is afloat value;1.0d is adouble value), donot influence the results of this method. In other words, the numerical value of the input string is converted directly to the target floating-point type. In general, the two-step sequence of conversions, string todouble followed bydouble tofloat, isnot equivalent to converting a string directly tofloat. For example, if first converted to an intermediatedouble and then tofloat, the string
"1.00000017881393421514957253748434595763683319091796875001d"
results in thefloat value1.0000002f; if the string is converted directly tofloat,1.0000001f results.
To avoid calling this method on an invalid string and having aNumberFormatException be thrown, the documentation forDouble.valueOf lists a regular expression which can be used to screen the input.
Parameters:
s - the string to be parsed.
Returns:
aFloat object holding the value represented by theString argument.
Throws:
NumberFormatException - if the string does not contain a parsable number.

valueOf
```
public static Float valueOf(float f)
```
Returns aFloat instance representing the specifiedfloat value. If a newFloat instance is not required, this method should generally be used in preference to the constructorFloat(float), as this method is likely to yield significantly better space and time performance by caching frequently requested values.
Parameters:
f - a float value.
Returns:
aFloat instance representingf.
Since:
1.5

parseFloat
```
public static float parseFloat(String s)                        throwsNumberFormatException
```
Returns a newfloat initialized to the value represented by the specifiedString, as performed by thevalueOf method of classFloat.
Parameters:
s - the string to be parsed.
Returns:
thefloat value represented by the string argument.
Throws:
NullPointerException - if the string is null
NumberFormatException - if the string does not contain a parsablefloat.
Since:
1.2
See Also:
valueOf(String)

isNaN
```
public static boolean isNaN(float v)
```
Returnstrue if the specified number is a Not-a-Number (NaN) value,false otherwise.
Parameters:
v - the value to be tested.
Returns:
true if the argument is NaN;false otherwise.

isInfinite
```
public static boolean isInfinite(float v)
```
Returnstrue if the specified number is infinitely large in magnitude,false otherwise.
Parameters:
v - the value to be tested.
Returns:
true if the argument is positive infinity or negative infinity;false otherwise.

isFinite
```
public static boolean isFinite(float f)
```
Returnstrue if the argument is a finite floating-point value; returnsfalse otherwise (for NaN and infinity arguments).
Parameters:
f - thefloat value to be tested
Returns:
true if the argument is a finite floating-point value,false otherwise.
Since:
1.8

isNaN
```
public boolean isNaN()
```
Returnstrue if thisFloat value is a Not-a-Number (NaN),false otherwise.
Returns:
true if the value represented by this object is NaN;false otherwise.

isInfinite
```
public boolean isInfinite()
```
Returnstrue if thisFloat value is infinitely large in magnitude,false otherwise.
Returns:
true if the value represented by this object is positive infinity or negative infinity;false otherwise.

toString
```
public String toString()
```
Returns a string representation of thisFloat object. The primitivefloat value represented by this object is converted to aString exactly as if by the methodtoString of one argument.
Overrides:
toString in class Object
Returns:
aString representation of this object.
See Also:
toString(float)

byteValue
```
public byte byteValue()
```
Returns the value of thisFloat as abyte after a narrowing primitive conversion.
Overrides:
byteValue in class Number
Returns:
thefloat value represented by this object converted to typebyte
SeeThe Java™ Language Specification:
5.1.3 Narrowing Primitive Conversions

shortValue
```
public short shortValue()
```
Returns the value of thisFloat as ashort after a narrowing primitive conversion.
Overrides:
shortValue in class Number
Returns:
thefloat value represented by this object converted to typeshort
Since:
1.1
SeeThe Java™ Language Specification:
5.1.3 Narrowing Primitive Conversions

intValue
```
public int intValue()
```
Returns the value of thisFloat as anint after a narrowing primitive conversion.
Specified by:
intValue in class Number
Returns:
thefloat value represented by this object converted to typeint
SeeThe Java™ Language Specification:
5.1.3 Narrowing Primitive Conversions

longValue
```
public long longValue()
```
Returns value of thisFloat as along after a narrowing primitive conversion.
Specified by:
longValue in class Number
Returns:
thefloat value represented by this object converted to typelong
SeeThe Java™ Language Specification:
5.1.3 Narrowing Primitive Conversions

floatValue
```
public float floatValue()
```
Returns thefloat value of thisFloat object.
Specified by:
floatValue in class Number
Returns:
thefloat value represented by this object

doubleValue
```
public double doubleValue()
```
Returns the value of thisFloat as adouble after a widening primitive conversion.
Specified by:
doubleValue in class Number
Returns:
thefloat value represented by this object converted to typedouble
SeeThe Java™ Language Specification:
5.1.2 Widening Primitive Conversions

hashCode
```
public int hashCode()
```
Returns a hash code for thisFloat object. The result is the integer bit representation, exactly as produced by the methodfloatToIntBits(float), of the primitivefloat value represented by thisFloat object.
Overrides:
hashCode in class Object
Returns:
a hash code value for this object.
See Also:
Object.equals(java.lang.Object),System.identityHashCode(java.lang.Object)

hashCode
```
public static int hashCode(float value)
```
Returns a hash code for afloat value; compatible withFloat.hashCode().
Parameters:
value - the value to hash
Returns:
a hash code value for afloat value.
Since:
1.8

equals
```
public boolean equals(Object obj)
```
Compares this object against the specified object. The result istrue if and only if the argument is notnull and is aFloat object that represents afloat with the same value as thefloat represented by this object. For this purpose, twofloat values are considered to be the same if and only if the methodfloatToIntBits(float) returns the identicalint value when applied to each.
Note that in most cases, for two instances of classFloat,f1 andf2, the value off1.equals(f2) istrue if and only if
```
   f1.floatValue() == f2.floatValue()
```
also has the valuetrue. However, there are two exceptions:
- Iff1 andf2 both representFloat.NaN, then theequals method returnstrue, even thoughFloat.NaN==Float.NaN has the valuefalse.
- Iff1 represents+0.0f whilef2 represents-0.0f, or vice versa, theequal test has the valuefalse, even though0.0f==-0.0f has the valuetrue.
This definition allows hash tables to operate properly.
Overrides:
equals in class Object
Parameters:
obj - the object to be compared
Returns:
true if the objects are the same;false otherwise.
See Also:
floatToIntBits(float)

floatToIntBits
```
public 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.
Bit 31 (the bit that is selected by the mask0x80000000) represents the sign of the floating-point number. Bits 30-23 (the bits that are selected by the mask0x7f800000) represent the exponent. Bits 22-0 (the bits that are selected by the mask0x007fffff) represent the significand (sometimes called the mantissa) of the floating-point number.
If the argument is positive infinity, the result is0x7f800000.
If the argument is negative infinity, the result is0xff800000.
If the argument is NaN, the result is0x7fc00000.
In all cases, the result is an integer that, when given to theintBitsToFloat(int) method, will produce a floating-point value the same as the argument tofloatToIntBits (except all NaN values are collapsed to a single "canonical" NaN value).
Parameters:
value - a floating-point number.
Returns:
the bits that represent the floating-point number.

floatToRawIntBits
```
public 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.
Bit 31 (the bit that is selected by the mask0x80000000) represents the sign of the floating-point number. Bits 30-23 (the bits that are selected by the mask0x7f800000) represent the exponent. Bits 22-0 (the bits that are selected by the mask0x007fffff) represent the significand (sometimes called the mantissa) of the floating-point number.
If the argument is positive infinity, the result is0x7f800000.
If the argument is negative infinity, the result is0xff800000.
If the argument is NaN, the result is the integer representing the actual NaN value. Unlike thefloatToIntBits method,floatToRawIntBits does not collapse all the bit patterns encoding a NaN to a single "canonical" NaN value.
In all cases, the result is an integer that, when given to theintBitsToFloat(int) method, will produce a floating-point value the same as the argument tofloatToRawIntBits.
Parameters:
value - a floating-point number.
Returns:
the bits that represent the floating-point number.
Since:
1.3

intBitsToFloat
```
public static float intBitsToFloat(int bits)
```
Returns thefloat value corresponding to a given bit representation. The argument is considered to be a representation of a floating-point value according to the IEEE 754 floating-point "single format" bit layout.
If the argument is0x7f800000, the result is positive infinity.
If the argument is0xff800000, the result is negative infinity.
If the argument is any value in the range0x7f800001 through0x7fffffff or in the range0xff800001 through0xffffffff, the result is a NaN. No IEEE 754 floating-point operation provided by Java can distinguish between two NaN values of the same type with different bit patterns. Distinct values of NaN are only distinguishable by use of theFloat.floatToRawIntBits method.
In all other cases, lets,e, andm be three values that can be computed from the argument:
```
 int s = ((bits >> 31) == 0) ? 1 : -1; int e = ((bits >> 23) & 0xff); int m = (e == 0) ?                 (bits & 0x7fffff) << 1 :                 (bits & 0x7fffff) | 0x800000;
```
Then the floating-point result equals the value of the mathematical expressions·m·2^e-150.
Note that this method may not be able to return afloat NaN with exactly same bit pattern as theint argument. IEEE 754 distinguishes between two kinds of NaNs, quiet NaNs andsignaling NaNs. The differences between the two kinds of NaN are generally not visible in Java. Arithmetic operations on signaling NaNs turn them into quiet NaNs with a different, but often similar, bit pattern. However, on some processors merely copying a signaling NaN also performs that conversion. In particular, copying a signaling NaN to return it to the calling method may perform this conversion. SointBitsToFloat may not be able to return afloat with a signaling NaN bit pattern. Consequently, for someint values,floatToRawIntBits(intBitsToFloat(start)) maynot equalstart. Moreover, which particular bit patterns represent signaling NaNs is platform dependent; although all NaN bit patterns, quiet or signaling, must be in the NaN range identified above.
Parameters:
bits - an integer.
Returns:
thefloat floating-point value with the same bit pattern.

compareTo
```
public int compareTo(Float anotherFloat)
```
Compares twoFloat objects numerically. There are two ways in which comparisons performed by this method differ from those performed by the Java language numerical comparison operators (<, <=, ==, >=, >) when applied to primitivefloat values:
- Float.NaN is considered by this method to be equal to itself and greater than all otherfloat values (includingFloat.POSITIVE_INFINITY).
- 0.0f is considered by this method to be greater than-0.0f.
This ensures that thenatural ordering ofFloat objects imposed by this method isconsistent with equals.
Specified by:
compareTo in interface Comparable<Float>
Parameters:
anotherFloat - theFloat to be compared.
Returns:
the value0 ifanotherFloat is numerically equal to thisFloat; a value less than0 if thisFloat is numerically less thananotherFloat; and a value greater than0 if thisFloat is numerically greater thananotherFloat.
Since:
1.2
See Also:
Comparable.compareTo(Object)

compare
```
public static int compare(float f1,                          float f2)
```
Compares the two specifiedfloat values. The sign of the integer value returned is the same as that of the integer that would be returned by the call:
```
    new Float(f1).compareTo(new Float(f2))
```
Parameters:
f1 - the firstfloat to compare.
f2 - the secondfloat to compare.
Returns:
the value0 iff1 is numerically equal tof2; a value less than0 iff1 is numerically less thanf2; and a value greater than0 iff1 is numerically greater thanf2.
Since:
1.4

sum
```
public static float sum(float a,                        float b)
```
Adds twofloat values together as per the + operator.
Parameters:
a - the first operand
b - the second operand
Returns:
the sum ofa andb
Since:
1.8
See Also:
BinaryOperator
SeeThe Java™ Language Specification:
4.2.4 Floating-Point Operations

max
```
public static float max(float a,                        float b)
```
Returns the greater of twofloat values as if by callingMath.max.
Parameters:
a - the first operand
b - the second operand
Returns:
the greater ofa andb
Since:
1.8
See Also:
BinaryOperator

min
```
public static float min(float a,                        float b)
```
Returns the smaller of twofloat values as if by callingMath.min.
Parameters:
a - the first operand
b - the second operand
Returns:
the smaller ofa andb
Since:
1.8
See Also:
BinaryOperator

Movatterモバイル変換

Class Float

Field Summary

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Field Detail

POSITIVE_INFINITY

NEGATIVE_INFINITY

NaN

MAX_VALUE

MIN_NORMAL

MIN_VALUE

MAX_EXPONENT

MIN_EXPONENT

SIZE

BYTES

TYPE

Constructor Detail

Float

Float

Float

Method Detail

toString

toHexString

valueOf

valueOf

parseFloat

isNaN

isInfinite

isFinite

isNaN

isInfinite

toString

byteValue

shortValue

intValue

longValue

floatValue

doubleValue

hashCode

hashCode

equals

floatToIntBits

floatToRawIntBits

intBitsToFloat

compareTo

compare

sum

max

min