All Implemented Interfaces:

Serializable, Comparable<Double>, Modified
```
public final class Double
extends Number
implements Comparable<Double>, Modified
```
The wrapper for the primitive type double.

Since:

1.0

See Also:

Number, Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static double`	`INF_EXPONENT`
`static double`	`MAX_VALUE`	A constant holding the largest positive finite value of type `double`, (2-2^-52)·2¹⁰²³.
`static double`	`MIN_VALUE`	A constant holding the smallest positive nonzero value of type `double`, 2^-1074.
`static double`	`MIN_VALUE_NORM`	A constant holding the smallest positive normalized value of type `double`, 2^-1074.
`static double`	`NaN`	A constant holding a Not-a-Number (NaN) value of type `double`.
`static double`	`NEGATIVE_INFINITY`	A constant holding the negative infinity of type `double`.
`static double`	`POSITIVE_INFINITY`	A constant holding the positive infinity of type `double`.
`static int`	`SIZE`	The number of bits used to represent a `Double` value.

Constructor Summary

Constructors
Constructor	Description
`Double(double value)`	Constructs a newly allocated `Double` object that represents the primitive `double` argument.
`Double(String string)`	Constructs a new `Double` from the specified string.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte`	`byteValue()`	Returns this object's value as a byte.
`static int`	`compare(double double1, double double2)`	Compares the two specified double values.
`int`	`compareTo(Double object)`	Compares this object to the specified double object to determine their relative order.
`static int`	`doubleToChars(double val, int nofFractDigits, char[] chars)`
`double`	`doubleValue()`	Returns the `double` value of this `Double` object.
`boolean`	`equals(Object object)`	Tests this double for equality with `object`.
`float`	`floatValue()`	Returns this object's value as a float.
`static int`	`getExponent(double arg)`	Returns the exponent of a double precision `value` to the base of 2.
`int`	`hashCode()`	Returns an integer hash code for this object.
`static int`	`highPartToIntBits(double arg)`	Returns an integer corresponding to the upper 32 bits of the given IEEE 754 double precision `value`.
`int`	`intValue()`	Returns this object's value as an int.
`boolean`	`isInfinite()`	Indicates whether this object represents an infinite value.
`static boolean`	`isInfinite(double d)`	Indicates whether the specified double represents an infinite value.
`boolean`	`isNaN()`	Indicates whether this object is a Not-a-Number (NaN) value.
`static boolean`	`isNaN(double d)`	Indicates whether the specified double is a Not-a-Number (NaN) value.
`long`	`longValue()`	Returns this object's value as a long.
`static int`	`lowPartToIntBits(double arg)`	Returns an integer corresponding to the lower 32 bits of the given IEEE 754 double precision `value`.
`static double`	`parseDouble(String s)`	Returns the closest double value to the real number in the string.
`static double`	`powOf10(int e)`	Calculates power to the base of 10
`static double`	`setExponent(double d, int newExp)`	Sets the exponent of a double precision `value` to the base of 2 and returns the new value.
`short`	`shortValue()`	Returns this object's value as a short.
`String`	`toString()`	Returns a string containing a concise, human-readable description of this object.
`static String`	`toString(double d)`	Returns a string containing a concise, human-readable description of the specified double value.
`static Double`	`valueOf(double d)`	Returns a `Double` instance for the specified double value.
`static Double`	`valueOf(String string)`	Parses the specified string as a double value.

Methods inherited from class java.lang.Object
getClass

- Field Detail
  - POSITIVE_INFINITY
```
public static final double POSITIVE_INFINITY
```
    A constant holding the positive infinity of type double. It is equal to the value returned by Double.longBitsToDouble(0x7ff0000000000000L).
    
    See Also:
    
    Constant Field Values
  - NEGATIVE_INFINITY
```
public static final double NEGATIVE_INFINITY
```
    A constant holding the negative infinity of type double. It is equal to the value returned by Double.longBitsToDouble(0xfff0000000000000L).
    
    See Also:
    
    Constant Field Values
  - NaN
```
public static final double NaN
```
    A constant holding a Not-a-Number (NaN) value of type double. It is equivalent to the value returned by Double.longBitsToDouble(0x7ff8000000000000L).
    
    See Also:
    
    Constant Field Values
  - MAX_VALUE
```
public static final double MAX_VALUE
```
    A constant holding the largest positive finite value of type double, (2-2^-52)·2¹⁰²³. It is equal to the hexadecimal floating-point literal 0x1.fffffffffffffP+1023 and also equal to Double.longBitsToDouble(0x7fefffffffffffffL).
    
    See Also:
    
    Constant Field Values
  - MIN_VALUE
```
public static final double MIN_VALUE
```
    A constant holding the smallest positive nonzero value of type double, 2^-1074. It is equal to the hexadecimal floating-point literal 0x0.0000000000001P-1022 and also equal to Double.longBitsToDouble(0x1L).
    
    See Also:
    
    Constant Field Values
  - MIN_VALUE_NORM
```
public static final double MIN_VALUE_NORM
```
    A constant holding the smallest positive normalized value of type double, 2^-1074. It is equal to the hexadecimal floating-point literal Double.longBitsToDouble(1L << 52).
    
    See Also:
    
    Constant Field Values
  - SIZE
```
public static final int SIZE
```
    The number of bits used to represent a Double value.
    
    See Also:
    
    Constant Field Values
  - INF_EXPONENT
```
public static final double INF_EXPONENT
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Double
```
public Double(double value)
```
    Constructs a newly allocated Double object that represents the primitive double argument.
    
    Parameters:
    
    value - the value to be represented by the Double.
  - Double
```
public Double(String string)
       throws NumberFormatException
```
    Constructs a new Double from the specified string.
    
    Parameters:
    
    string - the string representation of a double value.
    
    Throws:
    
    NumberFormatException - if string cannot be parsed as a double value.
    
    See Also:
    
    parseDouble(String)
- Method Detail
  - powOf10
```
public static double powOf10(int e)
```
    Calculates power to the base of 10
    
    Parameters:
    
    e - this is the exponent
    
    Returns:
    
    power of 10^e.
  - highPartToIntBits
```
public static int highPartToIntBits(double arg)
```
    Returns an integer corresponding to the upper 32 bits of the given IEEE 754 double precision value.
    
    Parameters:
    
    arg - Double argument.
    
    Returns:
    
    Upper 32 bits.
  - lowPartToIntBits
```
public static int lowPartToIntBits(double arg)
```
    Returns an integer corresponding to the lower 32 bits of the given IEEE 754 double precision value.
    
    Parameters:
    
    arg - Double argument.
    
    Returns:
    
    Lower 32 bits.
  - getExponent
```
public static int getExponent(double arg)
```
    Returns the exponent of a double precision value to the base of 2.
    
    Parameters:
    
    arg - Double argument.
    
    Returns:
    
    Exponent.
  - setExponent
```
public static double setExponent(double d,
                                 int newExp)
```
    Sets the exponent of a double precision value to the base of 2 and returns the new value.
    
    Parameters:
    
    d - Double
    
    newExp - New exponent.
    
    Returns:
    
    New double value.
  - doubleToChars
```
public static int doubleToChars(double val,
                                int nofFractDigits,
                                char[] chars)
```
  - valueOf
```
public static Double valueOf(double d)
```
    Returns a Double instance for the specified double value.
    
    Parameters:
    
    d - the double value to store in the instance.
    
    Returns:
    
    a Double instance containing d.
    
    Since:
    
    1.5
  - valueOf
```
public static Double valueOf(String string)
                      throws NumberFormatException
```
    Parses the specified string as a double value.
    
    Parameters:
    
    string - the string representation of a double value.
    
    Returns:
    
    a Double instance containing the double value represented by string.
    
    Throws:
    
    NumberFormatException - if string cannot be parsed as a double value.
    
    See Also:
    
    parseDouble(String)
  - parseDouble
```
public static double parseDouble(String s)
                          throws NumberFormatException
```
    Returns the closest double value to the real number in the string.
    
    Parameters:
    
    s - the String that will be parsed to a floating point
    
    Returns:
    
    the double closest to the real number
    
    Throws:
    
    NumberFormatException - if the String doesn't represent a double
  - doubleValue
```
public double doubleValue()
```
    Returns the double value of this Double object.
    
    Specified by:
    
    doubleValue in class Number
    
    Returns:
    
    the double value represented by this object
  - 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.
  - floatValue
```
public float floatValue()
```
    Description copied from class: Number
    
    Returns this object's value as a float. Might involve rounding.
    
    Specified by:
    
    floatValue in class Number
    
    Returns:
    
    the primitive float value of this object.
  - 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.
  - 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.
  - 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.
  - 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)
  - 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.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a printable representation of this object.
  - toString
```
public static String toString(double d)
```
    Returns a string containing a concise, human-readable description of the specified double value.
    
    Parameters:
    
    d - the double to convert to a string.
    
    Returns:
    
    a printable representation of d.
  - compareTo
```
public int compareTo(Double object)
```
    Compares this object to the specified double object to determine their relative order. There are two special cases:
    
    Double.NaN is equal to Double.NaN and it is greater than any other double value, including Double.POSITIVE_INFINITY;
    
    +0.0d is greater than -0.0d
    Specified by:
    
    compareTo in interface Comparable<Double>
    
    Parameters:
    
    object - the double object to compare this object to.
    
    Returns:
    
    a negative value if the value of this double is less than the value of object; 0 if the value of this double and the value of object are equal; a positive value if the value of this double is greater than the value of object.
    
    Throws:
    
    NullPointerException - if object is null.
    
    Since:
    
    1.2
    
    See Also:
    
    Comparable
  - compare
```
public static int compare(double double1,
                          double double2)
```
    Compares the two specified double values. There are two special cases:
    
    Double.NaN is equal to Double.NaN and it is greater than any other double value, including Double.POSITIVE_INFINITY;
    
    +0.0d is greater than -0.0d
    Parameters:
    
    double1 - the first value to compare.
    
    double2 - the second value to compare.
    
    Returns:
    
    a negative value if double1 is less than double2; 0 if double1 and double2 are equal; a positive value if double1 is greater than double2.
  - equals
```
public boolean equals(Object object)
```
    Tests this double for equality with object. To be equal, object must be an instance of Double and doubleToLongBits 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 double with.
    
    Returns:
    
    true if the specified object is equal to this Double; false otherwise.
    
    See Also:
    
    Object.hashCode()
  - isInfinite
```
public boolean isInfinite()
```
    Indicates whether this object represents an infinite value.
    
    Returns:
    
    true if the value of this double is positive or negative infinity; false otherwise.
  - isInfinite
```
public static boolean isInfinite(double d)
```
    Indicates whether the specified double represents an infinite value.
    
    Parameters:
    
    d - the double to check.
    
    Returns:
    
    true if the value of d 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 double is Not-a-Number; false if it is a (potentially infinite) double number.
  - isNaN
```
public static boolean isNaN(double d)
```
    Indicates whether the specified double is a Not-a-Number (NaN) value.
    
    Parameters:
    
    d - the double value to check.
    
    Returns:
    
    true if d is Not-a-Number; false if it is a (potentially infinite) double number.

Class Double

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

POSITIVE_INFINITY

NEGATIVE_INFINITY

NaN

MAX_VALUE

MIN_VALUE

MIN_VALUE_NORM

SIZE

INF_EXPONENT

Constructor Detail

Double

Double

Method Detail

powOf10

highPartToIntBits

lowPartToIntBits

getExponent

setExponent

doubleToChars

valueOf

valueOf

parseDouble

doubleValue

byteValue

floatValue

intValue

longValue

shortValue

hashCode

toString

toString

compareTo

compare

equals

isInfinite

isInfinite

isNaN

isNaN