oracle.ifs.share

Class Fifo

java.lang.Object

oracle.ifs.share.Fifo

public class Fifo
extends Object

A first-in first-out queue, implemented as circular buffer.

Constructor Summary

Constructors

Constructor and Description
Fifo(int initialSize) Constructs a Fifo with specified capacity.

Method Summary

Modifier and Type	Method and Description
Object	dequeue() Dequeues an object.
void	enqueue(Object o) Enqueues an object.
boolean	isEmpty() Return indication as to whether the queue is empty.
int	size() Return the number of currently queued entries.

Methods inherited from class java.lang.Object

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

Constructor Detail

Fifo

public Fifo(int initialSize)

Constructs a Fifo with specified capacity.

Parameters:

initialSize - initial capacity

Method Detail

enqueue

public void enqueue(Object o)

Enqueues an object.

Parameters:

o - object to enqueue, does nothing if null

dequeue

public Object dequeue()

Dequeues an object.

Returns:

dequeued object, null if queue is empty

isEmpty

public boolean isEmpty()

Return indication as to whether the queue is empty.

Returns:

true if the queue is empty; false otherwise

size

public int size()

Return the number of currently queued entries.

Returns:

the number of currently queued entries.