Class Number
java.lang
java.lang.Object
  java.lang.Number
All Implemented Interfaces:
java.io.Serializable
Direct Known Subclasses:
Byte, Double, Float, Integer, Long, Short
abstract public class Number
extends Object
implements java.io.Serializable
The abstract class Number is the superclass of classes BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, and Short.

Subclasses of Number must provide methods to convert the represented numeric value to byte, double, float, int, long, and short.

Since:
JDK1.0
Version:
1.30, 11/17/05
Author:
Lee Boynton, Arthur van Hoff
See Also:
Byte, Double, Float, Integer, Long, Short
Constructor Summary
Number()
Method Summary
byte
 byteValue()
Returns the value of the specified number as a byte.
abstract double
 doubleValue()
Returns the value of the specified number as a double.
abstract float
 floatValue()
Returns the value of the specified number as a float.
abstract int
 intValue()
Returns the value of the specified number as an int.
abstract long
 longValue()
Returns the value of the specified number as a long.
short
 shortValue()
Returns the value of the specified number as a short.
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
intValue
public abstract int intValue()
Returns the value of the specified number as an int. This may involve rounding or truncation.
Returns:
the numeric value represented by this object after conversion to type int.
longValue
public abstract long longValue()
Returns the value of the specified number as a long. This may involve rounding or truncation.
Returns:
the numeric value represented by this object after conversion to type long.
floatValue
public abstract float floatValue()
Returns the value of the specified number as a float. This may involve rounding.
Returns:
the numeric value represented by this object after conversion to type float.
doubleValue
public abstract double doubleValue()
Returns the value of the specified number as a double. This may involve rounding.
Returns:
the numeric value represented by this object after conversion to type double.
byteValue
public byte byteValue()
Returns the value of the specified number as a byte. This may involve rounding or truncation.
Returns:
the numeric value represented by this object after conversion to type byte.
Since:
JDK1.1
shortValue
public short shortValue()
Returns the value of the specified number as a short. This may involve rounding or truncation.
Returns:
the numeric value represented by this object after conversion to type short.
Since:
JDK1.1
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