java.lang
Class Double

java.lang.Object
  |
  +--java.lang.Double

public class Double

extends Object

Field Summary

static double	MAX_VALUE
static double	MIN_VALUE
static double	NaN
static double	NEGATIVE_INFINITY
static double	POSITIVE_INFINITY

Constructor Summary

Double(double value)
Declare constructor

Method Summary

byte	byteValue() Get the value of this double as a byte (by casting to a byte)
static long	doubleToLongBits(double value) Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "double format" bit layout
double	doubleValue() Returns the double value of this double
boolean	equals(Object obj) Test if the value of this object equals another objects value
float	floatValue() Returns the float value of this double
int	hashCode() Returns the hash value for this Double
int	intValue() Returns the integer value of this Double (by casting to an int)
boolean	isInfinite() Returns true if this Double is infinitely large in magnitude
static boolean	isInfinite(double v) Returns true if the double passed in is infinitely large in magnitude
boolean	isNaN() Returns true if this Double value is the special NaN (Not A Number) value
static boolean	isNaN(double v) Returns true if the double value passed in is NaN (Not A Number)
static double	longBitsToDouble(long bits) Returns the double corresponding to a given bit represention.
long	longValue() Returns the long value of this Double (by casting to a long)
static double	parseDouble(java.lang.String s) Returns a new double initialized with the value represented by the specified String
short	shortValue() Returns the value of this Double as a short (by casting to a short)
java.lang.String	toString() Returns a String representation of this Double
static java.lang.String	toString(double d) Returns a String representation for the specified double value
static Double	valueOf(java.lang.String s) Returns the double value represented by the specified String

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

MAX_VALUE

public static final double MAX_VALUE

See Also:

Constant Field Values

MIN_VALUE

public static final double MIN_VALUE

See Also:

Constant Field Values

NaN

public static final double NaN

See Also:

Constant Field Values

NEGATIVE_INFINITY

public static final double NEGATIVE_INFINITY

See Also:

Constant Field Values

POSITIVE_INFINITY

public static final double POSITIVE_INFINITY

See Also:

Constant Field Values

Constructor Detail

Double

public Double(double value)

Declare constructor

Method Detail

byteValue

public byte byteValue()

Get the value of this double as a byte (by casting to a byte)

Returns:

the byte value

doubleToLongBits

public static long doubleToLongBits(double value)

Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "double format" bit layout

Returns:

the bits that represent the floating point number

doubleValue

public double doubleValue()

Returns the double value of this double

Returns:

the double value represented by this object

equals

public boolean equals(Object obj)

Test if the value of this object equals another objects value

Overrides:

equals in class Object

Parameters:

obj - The other object

Returns:

true if the object is a valid Double containing the same value as this one

floatValue

public float floatValue()

Returns the float value of this double

Returns:

the float value

hashCode

public int hashCode()

Returns the hash value for this Double

Overrides:

hashCode in class Object

Returns:

the hash value

intValue

public int intValue()

Returns the integer value of this Double (by casting to an int)

Returns:

the int value

isInfinite

public boolean isInfinite()

Returns true if this Double is infinitely large in magnitude

Returns:

true if the value is equal to positive or negative infinity

isInfinite

public static boolean isInfinite(double v)

Returns true if the double passed in is infinitely large in magnitude

Parameters:

v - double to be tested

Returns:

true if the value passed in is equal to positive or negative infinity

isNaN

public boolean isNaN()

Returns true if this Double value is the special NaN (Not A Number) value

Returns:

true if this Float value is NaN

isNaN

public static boolean isNaN(double v)

Returns true if the double value passed in is NaN (Not A Number)

Parameters:

v - the double to be tested

Returns:

true if the value passed in is NaN

longBitsToDouble

public static double longBitsToDouble(long bits)

Returns the double corresponding to a given bit represention.

Returns:

the double corresponding to a given bit represention.

longValue

public long longValue()

Returns the long value of this Double (by casting to a long)

Returns:

the long value

parseDouble

public static double parseDouble(java.lang.String s)
                          throws NumberFormatException

Returns a new double initialized with the value represented by the specified String

Parameters:

s - the string to be parsed

Returns:

the double value represented by the string argument

NumberFormatException

shortValue

public short shortValue()

Returns the value of this Double as a short (by casting to a short)

Returns:

the value of this Double as a short

toString

public java.lang.String toString()

Returns a String representation of this Double

Overrides:

toString in class Object

Returns:

the String representation of this object

toString

public static java.lang.String toString(double d)

Returns a String representation for the specified double value

Parameters:

d - the double to be converted

Returns:

the String representation of the argument

valueOf

public static Double valueOf(java.lang.String s)
                      throws NumberFormatException

Returns the double value represented by the specified String

Parameters:

s - the String to be parsed

Returns:

a newly constructed Double initialized to the value represented by the String argument.

NumberFormatException