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Class java.lang.Number

java.lang.Object
    |
    +----java.lang.Number
Subclasses:
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 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

Constructor Summary
 Number()
 
 

Method Summary
byte  byteValue()
Returns the value of the specified number as a byte.
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.
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.
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.
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.

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.

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