com.jdc.math
Class Number

java.lang.Object
  |
  +--java.lang.Number
        |
        +--com.jdc.math.Number

All Implemented Interfaces:

DefaultLocale, Serializable

Direct Known Subclasses:

Decimal, Integer

public abstract class Number

extends Number

implements DefaultLocale, Serializable

Interface Number represents a decimal or integer number. The Number interface provides basic operations for conversion to primitive types as well as checking for a valid number.

Reference: Cool Menu Reference

Version:

1.0

Author:

Jay Damon

See Also:

Number, Serialized Form

Field Summary

Fields inherited from interface com.jdc.util.DefaultLocale

DEFAULT_LOCALE

Constructor Summary

Number()

Method Summary

double	doubleValue() Returns the value of the specified number as a double.
float	floatValue() Returns the value of the specified number as a float.
int	intValue() Returns the value of the specified number as an int.
abstract boolean	isNaN() Returns true if the value represented by this Number object is Not-a-Number, i.e.
long	longValue() Returns the value of the specified number as a long.

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Number

public Number()

Method Detail

doubleValue

public double doubleValue()

Returns the value of the specified number as a double. This may involve rounding

Specified by:

doubleValue in class Number

Returns:

The numeric value represented by this object after conversion to type double.

floatValue

public float floatValue()

Returns the value of the specified number as a float. This may involve rounding.

Specified by:

floatValue in class Number

Returns:

The numeric value represented by this object after conversion to type float.

intValue

public int intValue()

Returns the value of the specified number as an int. This may involve rounding.

Specified by:

intValue in class Number

Returns:

The numeric value represented by this object after conversion to type int

isNaN

public abstract boolean isNaN()

Returns true if the value represented by this Number object is Not-a-Number, i.e. NaN.

Returns:

True if the value is Not-a-Number, i.e. NaN. False if the value is a valid number.

longValue

public long longValue()

Returns the value of the specified number as a long. This may involve rounding.

Specified by:

longValue in class Number

Returns:

The numeric value represented by this object after conversion to type long.