com.j_spaces.jms.utils

Class CyclicCounter

java.lang.Object

com.j_spaces.jms.utils.Counter

com.j_spaces.jms.utils.CyclicCounter

public class CyclicCounter
extends Counter

This counter makes sure that we stay in the range of 0 - Integer.MAX_VALUE. The cyclic rule is: ...Integer.MAX_VALUE-1, Integer.MAX_VALUE, 0, 1...

Author:

Shai Wolf

Field Summary

Fields inherited from class com.j_spaces.jms.utils.Counter

lock, start, value

Constructor Summary

Constructors

Constructor and Description
CyclicCounter() Creates a new CyclicCounter instance.
CyclicCounter(int startValue) Creates a new CyclicCounter instance.

Method Summary

Modifier and Type	Method and Description
int	decrement() Decrements the counter by 1.
int	decrement(int val) Decrements the counter by val.
int	increment() Increments the counter by 1.
int	increment(int val) Increments the counter by val.

Methods inherited from class com.j_spaces.jms.utils.Counter

getValue, reset, setValue, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CyclicCounter

public CyclicCounter()

Creates a new CyclicCounter instance.

CyclicCounter

public CyclicCounter(int startValue)

Creates a new CyclicCounter instance.

Parameters:

startValue - the start value of the counter, 0 by default.

Method Detail

increment

public int increment()

Increments the counter by 1.

Overrides:

increment in class Counter

Returns:

the new counter's value.

increment

public int increment(int val)

Increments the counter by val.

Overrides:

increment in class Counter

Parameters:

val - the value by which to increment the counter.

Returns:

the new counter's value.

decrement

public int decrement()

Decrements the counter by 1.

Overrides:

decrement in class Counter

Returns:

the new counter's value.

decrement

public int decrement(int val)

Decrements the counter by val.

Overrides:

decrement in class Counter

Parameters:

val - the value by which to decrement the counter.

Returns:

the new counter's value.