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Float

java.lang

Class Float

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

All Implemented Interfaces:

Serializable, Comparable<Float>
```
public final class Float
extends Number
implements Comparable<Float>
```
The wrapper for the primitive type float.

Since:

1.0

See Also:
Number, Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`MAX_EXPONENT` Maximum base-2 exponent that a finite value of the `float` type may have.
`static float`	`MAX_VALUE` Constant for the maximum `float` value, (2 - 2^-23) * 2¹²⁷.
`static int`	`MIN_EXPONENT` Minimum base-2 exponent that a normal value of the `float` type may have.
`static float`	`MIN_NORMAL` Constant for the smallest positive normal value of the `float` type.
`static float`	`MIN_VALUE` Constant for the minimum `float` value, 2^-149.
`static float`	`NaN` Constant for the Not-a-Number (NaN) value of the `float` type.
`static float`	`NEGATIVE_INFINITY` Constant for the negative infinity value of the `float` type.
`static float`	`POSITIVE_INFINITY` Constant for the positive infinity value of the `float` type.
`static int`	`SIZE` Constant for the number of bits needed to represent a `float` in two's complement form.
`static Class<Float>`	`TYPE` The `Class` object that represents the primitive type `float`.

Constructor Summary

Constructors
Constructor and Description
`Float(double value)` Constructs a new `Float` with the specified primitive double value.
`Float(float value)` Constructs a new `Float` with the specified primitive float value.
`Float(String string)` Constructs a new `Float` from the specified string.

Method Summary

Methods
Modifier and Type	Method and Description
`byte`	`byteValue()` Returns this object's value as a byte.
`static int`	`compare(float float1, float float2)` Compares the two specified float values.
`int`	`compareTo(Float object)` Compares this object to the specified float object to determine their relative order.
`double`	`doubleValue()` Returns this object's value as a double.
`boolean`	`equals(Object object)` Tests this double for equality with `object`.
`static int`	`floatToIntBits(float value)` Returns an integer corresponding to the bits of the given IEEE 754 single precision float `value`.
`static int`	`floatToRawIntBits(float value)` Returns an integer corresponding to the bits of the given IEEE 754 single precision float `value`.
`float`	`floatValue()` Gets the primitive value of this float.
`int`	`hashCode()` Returns an integer hash code for this object.
`static float`	`intBitsToFloat(int bits)` Returns the IEEE 754 single precision float corresponding to the given `bits`.
`int`	`intValue()` Returns this object's value as an int.
`boolean`	`isInfinite()` Indicates whether this object represents an infinite value.
`static boolean`	`isInfinite(float f)` Indicates whether the specified float represents an infinite value.
`boolean`	`isNaN()` Indicates whether this object is a Not-a-Number (NaN) value.
`static boolean`	`isNaN(float f)` Indicates whether the specified float is a Not-a-Number (NaN) value.
`long`	`longValue()` Returns this object's value as a long.
`static float`	`parseFloat(String string)` Parses the specified string as a float value.
`short`	`shortValue()` Returns this object's value as a short.
`static String`	`toHexString(float f)` Converts the specified float into its hexadecimal string representation.
`String`	`toString()` Returns a string containing a concise, human-readable description of this object.
`static String`	`toString(float f)` Returns a string containing a concise, human-readable description of the specified float value.
`static Float`	`valueOf(float f)` Returns a `Float` instance for the specified float value.
`static Float`	`valueOf(String string)` Parses the specified string as a float value.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - MAX_VALUE
```
public static final float MAX_VALUE
```
    Constant for the maximum float value, (2 - 2^-23) * 2¹²⁷.
    
    See Also:
    Constant Field Values
  - MIN_VALUE
```
public static final float MIN_VALUE
```
    Constant for the minimum float value, 2^-149.
    
    See Also:
    Constant Field Values
  - NaN
```
public static final float NaN
```
    Constant for the Not-a-Number (NaN) value of the float type.
    
    See Also:
    Constant Field Values
  - POSITIVE_INFINITY
```
public static final float POSITIVE_INFINITY
```
    Constant for the positive infinity value of the float type.
    
    See Also:
    Constant Field Values
  - NEGATIVE_INFINITY
```
public static final float NEGATIVE_INFINITY
```
    Constant for the negative infinity value of the float type.
    
    See Also:
    Constant Field Values
  - MIN_NORMAL
```
public static final float MIN_NORMAL
```
    Constant for the smallest positive normal value of the float type.
    
    Since:
    
    1.6
    
    See Also:
    Constant Field Values
  - MAX_EXPONENT
```
public static final int MAX_EXPONENT
```
    Maximum base-2 exponent that a finite value of the float type may have. Equal to Math.getExponent(Float.MAX_VALUE).
    
    Since:
    
    1.6
    
    See Also:
    Constant Field Values
  - MIN_EXPONENT
```
public static final int MIN_EXPONENT
```
    Minimum base-2 exponent that a normal value of the float type may have. Equal to Math.getExponent(Float.MIN_NORMAL).
    
    Since:
    
    1.6
    
    See Also:
    Constant Field Values
  - TYPE
```
public static final Class<Float> TYPE
```
    The Class object that represents the primitive type float.
    
    Since:
    
    1.1
  - SIZE
```
public static final int SIZE
```
    Constant for the number of bits needed to represent a float in two's complement form.
    
    Since:
    
    1.5
    
    See Also:
    Constant Field Values
- Constructor Detail
  - Float
```
public Float(float value)
```
    Constructs a new Float with the specified primitive float value.
    
    Parameters:
    value - the primitive float value to store in the new instance.
  - Float
```
public Float(double value)
```
    Constructs a new Float with the specified primitive double value.
    
    Parameters:
    value - the primitive double value to store in the new instance.
  - Float
```
public Float(String string)
      throws NumberFormatException
```
    Constructs a new Float from the specified string.
    
    Parameters:
    string - the string representation of a float value.
    
    Throws:
    
    NumberFormatException - if string can not be parsed as a float value.
    See Also:
    parseFloat(String)
- Method Detail
  - compareTo
```
public int compareTo(Float object)
```
    Compares this object to the specified float object to determine their relative order. There are two special cases:
    - Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY;
    - +0.0f is greater than -0.0f
    Specified by:
    
    compareTo in interface Comparable<Float>
    
    Parameters:
    object - the float object to compare this object to.
    
    Returns:
    a negative value if the value of this float is less than the value of object; 0 if the value of this float and the value of object are equal; a positive value if the value of this float is greater than the value of object.
    Since:
    
    1.2
    
    See Also:
    Comparable
  - byteValue
```
public byte byteValue()
```
    Description copied from class: Number
    
    Returns this object's value as a byte. Might involve rounding and/or truncating the value, so it fits into a byte.
    
    Overrides:
    
    byteValue in class Number
    
    Returns:
    the primitive byte value of this object.
  - doubleValue
```
public double doubleValue()
```
    Description copied from class: Number
    
    Returns this object's value as a double. Might involve rounding.
    
    Specified by:
    
    doubleValue in class Number
    
    Returns:
    the primitive double value of this object.
  - equals
```
public boolean equals(Object object)
```
    Tests this double for equality with object. To be equal, object must be an instance of Float and floatToIntBits must give the same value for both objects.
    Note that, unlike ==, -0.0 and +0.0 compare unequal, and NaNs compare equal by this method.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    object - the object to compare this float with.
    
    Returns:
    true if the specified object is equal to this Float; false otherwise.
    See Also:
    Object.hashCode()
  - floatToIntBits
```
public static int floatToIntBits(float value)
```
    Returns an integer corresponding to the bits of the given IEEE 754 single precision float value. All Not-a-Number (NaN) values are converted to a single NaN representation (0x7fc00000) (compare to floatToRawIntBits(float)).
  - floatToRawIntBits
```
public static int floatToRawIntBits(float value)
```
    Returns an integer corresponding to the bits of the given IEEE 754 single precision float value. Not-a-Number (NaN) values are preserved (compare to floatToIntBits(float)).
  - floatValue
```
public float floatValue()
```
    Gets the primitive value of this float.
    
    Specified by:
    
    floatValue in class Number
    
    Returns:
    this object's primitive value.
  - hashCode
```
public int hashCode()
```
    Description copied from class: Object
    
    Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.
    Note that hash values must not change over time unless information used in equals comparisons also changes.
    See Writing a correct hashCode method if you intend implementing your own hashCode method.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    this object's hash code.
    See Also:
    Object.equals(java.lang.Object)
  - intBitsToFloat
```
public static float intBitsToFloat(int bits)
```
    Returns the IEEE 754 single precision float corresponding to the given bits.
  - intValue
```
public int intValue()
```
    Description copied from class: Number
    
    Returns this object's value as an int. Might involve rounding and/or truncating the value, so it fits into an int.
    
    Specified by:
    
    intValue in class Number
    
    Returns:
    the primitive int value of this object.
  - isInfinite
```
public boolean isInfinite()
```
    Indicates whether this object represents an infinite value.
    
    Returns:
    true if the value of this float is positive or negative infinity; false otherwise.
  - isInfinite
```
public static boolean isInfinite(float f)
```
    Indicates whether the specified float represents an infinite value.
    
    Parameters:
    f - the float to check.
    
    Returns:
    true if the value of f is positive or negative infinity; false otherwise.
  - isNaN
```
public boolean isNaN()
```
    Indicates whether this object is a Not-a-Number (NaN) value.
    
    Returns:
    true if this float is Not-a-Number; false if it is a (potentially infinite) float number.
  - isNaN
```
public static boolean isNaN(float f)
```
    Indicates whether the specified float is a Not-a-Number (NaN) value.
    
    Parameters:
    f - the float value to check.
    
    Returns:
    true if f is Not-a-Number; false if it is a (potentially infinite) float number.
  - longValue
```
public long longValue()
```
    Description copied from class: Number
    
    Returns this object's value as a long. Might involve rounding and/or truncating the value, so it fits into a long.
    
    Specified by:
    
    longValue in class Number
    
    Returns:
    the primitive long value of this object.
  - parseFloat
```
public static float parseFloat(String string)
                        throws NumberFormatException
```
    Parses the specified string as a float value.
    
    Parameters:
    string - the string representation of a float value.
    
    Returns:
    the primitive float value represented by string.
    
    Throws:
    
    NumberFormatException - if string can not be parsed as a float value.
    Since:
    
    1.2
    
    See Also:
    valueOf(String)
  - shortValue
```
public short shortValue()
```
    Description copied from class: Number
    
    Returns this object's value as a short. Might involve rounding and/or truncating the value, so it fits into a short.
    
    Overrides:
    
    shortValue in class Number
    
    Returns:
    the primitive short value of this object.
  - toString
```
public String toString()
```
    Description copied from class: Object
    Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:
```
   getClass().getName() + '@' + Integer.toHexString(hashCode())
```
    See Writing a useful toString method if you intend implementing your own toString method.
    Overrides:
    
    toString in class Object
    
    Returns:
    a printable representation of this object.
  - toString
```
public static String toString(float f)
```
    Returns a string containing a concise, human-readable description of the specified float value.
    
    Parameters:
    f - the float to convert to a string.
    
    Returns:
    a printable representation of f.
  - valueOf
```
public static Float valueOf(String string)
                     throws NumberFormatException
```
    Parses the specified string as a float value.
    
    Parameters:
    string - the string representation of a float value.
    
    Returns:
    a Float instance containing the float value represented by string.
    
    Throws:
    
    NumberFormatException - if string can not be parsed as a float value.
    See Also:
    parseFloat(String)
  - compare
```
public static int compare(float float1,
          float float2)
```
    Compares the two specified float values. There are two special cases:
    - Float.NaN is equal to Float.NaN and it is greater than any other float value, including Float.POSITIVE_INFINITY;
    - +0.0f is greater than -0.0f
    Parameters:
    float1 - the first value to compare.
    float2 - the second value to compare.
    
    Returns:
    a negative value if float1 is less than float2; 0 if float1 and float2 are equal; a positive value if float1 is greater than float2.
    Since:
    
    1.4
  - valueOf
```
public static Float valueOf(float f)
```
    Returns a Float instance for the specified float value.
    
    Parameters:
    f - the float value to store in the instance.
    
    Returns:
    a Float instance containing f.
    Since:
    
    1.5
  - toHexString
```
public static String toHexString(float f)
```
    Converts the specified float into its hexadecimal string representation.
    
    Parameters:
    f - the float to convert.
    
    Returns:
    the hexadecimal string representation of f.
    Since:
    
    1.5

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IT. Expert System.

Android Reference

Float

Class Float

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MAX_VALUE

MIN_VALUE

NaN

POSITIVE_INFINITY

NEGATIVE_INFINITY

MIN_NORMAL

MAX_EXPONENT

MIN_EXPONENT

TYPE

SIZE

Constructor Detail

Float

Float

Float

Method Detail

compareTo

byteValue

doubleValue

equals

floatToIntBits

floatToRawIntBits

floatValue

hashCode

intBitsToFloat

intValue

isInfinite

isInfinite

isNaN

isNaN

longValue

parseFloat

shortValue

toString

toString

valueOf

compare

valueOf

toHexString

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary