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All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AtomicInteger, AtomicLong, BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, Short
```
public abstract class Number
extends Object
implements 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

See Also:
Byte, Double, Float, Integer, Long, Short, Serialized Form

Constructor Summary

Constructors
Constructor and Description

Number()

Number (Java Platform SE 7 ) Home of API Java Contents Haut

Method Summary

Methods
Modifier and Type	Method and Description
`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`.

Number (Java Platform SE 7 ) Home of API Java Contents Haut

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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Steph

Class Number

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Number

Method Detail

intValue

longValue

floatValue

doubleValue

byteValue

shortValue

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Type of error (18-01)

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