data
Class NumberValue

java.lang.Object
  |
  +--data.NumberValue

Direct Known Subclasses:

DoubleValue, IntegerValue

public abstract class NumberValue

extends Object

implements Value

Values that operate on numbers.

All the operations are implemented as you would expect, the implementation is given in concrete subclasses.

Since:

v2.0

Version:

2.0 19/08/1999

Author:

Steffen Zschaler

See Also:

Serialized Form

Constructor Summary

NumberValue(Number nbValue)
Create a new NumberValue.

Method Summary

abstract Object	clone()
Number	getValue() Get the actual value of the object.
boolean	isAddZero()
boolean	isMulOne()
boolean	isMulZero()
void	setValue(Number nbValue) Set the actual value of the object.
String	toString() Return a String representation of the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberValue

public NumberValue(Number nbValue)

Create a new NumberValue.

Parameters:

nbValue - the actual initial value.

Method Detail

setValue

public void setValue(Number nbValue)

Set the actual value of the object.

Override:

Sometimes.

Override if you want to impose restrictions on the class of the actual value.

Parameters:

nbValue - the new actual value.

getValue

public Number getValue()

Get the actual value of the object.

Override:

Never.

isAddZero

public boolean isAddZero()

Override:

Sometimes.

The default implementation returns

 (getValue().longValue() == 0)
 

Specified by:

isAddZero in interface Value

isMulZero

public boolean isMulZero()

Override:

Sometimes.

The default implementation returns

 isAddZero()
 

Specified by:

isMulZero in interface Value

isMulOne

public boolean isMulOne()

Override:

Sometimes.

The default implementation returns

 (getValue().longValue() == 1)
 

Specified by:

isMulOne in interface Value

clone

public abstract Object clone()

Override:

Always.

Specified by:

clone in interface Value

Overrides:

clone in class Object

toString

public String toString()

Return a String representation of the object.

Override:

Sometimes.

The default implementation returns

 getValue().toString()
 

Overrides:

toString in class Object