net.sf.jour.util.queue
Class Queue

java.lang.Object
  net.sf.jour.util.queue.Queue

All Implemented Interfaces:

java.io.Serializable

public class Queue

extends java.lang.Object

implements java.io.Serializable

TODO Add docs Contributing Author(s): Misha Lifschitz (Inital implementation) Vlad Skarzhevskyy (Inital implementation)

Version:

$Revision: 1.6 $ ($Author: vlads $) $Date: 2004/12/07 09:04:52 $

Author:

michaellif

See Also:

Serialized Form

Constructor Summary

Queue()
Creats an empty queue

Method Summary

void	clear() Removes all elements at the queue.
java.lang.Object	dequeue() Removes the element at the top of the queue.
java.lang.Object[]	dequeueAll() Removes all the elements from the queue and returns the values as array.
java.lang.Object[]	dequeueAll(java.lang.Object[] a) Removes all the elements from the queue and returns the values as array.
java.lang.Object	enqueue(java.lang.Object element) Inserts a new element at the rear of the queue.
boolean	enqueueAll(Queue elements) Inserts a Collection of new element at the rear of the queue.
java.lang.Object	enqueueFirst(java.lang.Object element) Inserts a new element at the begining of the queue.
java.lang.Object	get(int i)
java.lang.Object	getFirst() Inspects the element at the top of the queue without removing it.
java.lang.Object	getLast() Inspects the element at the end of the queue without removing it.
boolean	isEmpty()
java.util.Iterator	iterator()
int	size()
java.lang.String	toString() Log4j event Queue dumper

Methods inherited from class java.lang.Object

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

Constructor Detail

Queue

public Queue()

Creats an empty queue

Method Detail

enqueue

public java.lang.Object enqueue(java.lang.Object element)

Inserts a new element at the rear of the queue.

Parameters:

element - element to be inserted.

enqueueFirst

public java.lang.Object enqueueFirst(java.lang.Object element)

Inserts a new element at the begining of the queue.

Parameters:

element - element to be inserted.

enqueueAll

public boolean enqueueAll(Queue elements)

Inserts a Collection of new element at the rear of the queue.

Parameters:

elements - Collection to be inserted.

dequeue

public java.lang.Object dequeue()

Removes the element at the top of the queue.

Returns:

the removed element.

Throws:

EmptyQueueException - if the queue is empty.

getFirst

public java.lang.Object getFirst()

Inspects the element at the top of the queue without removing it.

Returns:

the element at the top of the queue.

Throws:

EmptyQueueException - if the queue is empty.

get

public java.lang.Object get(int i)

getLast

public java.lang.Object getLast()

Inspects the element at the end of the queue without removing it.

Returns:

the element at the top of the queue.

Throws:

EmptyQueueException - if the queue is empty.

size

public int size()

Returns:

the number of elements at the queue.

isEmpty

public boolean isEmpty()

Returns:

true if the queue is empty.

clear

public void clear()

Removes all elements at the queue.

dequeueAll

public java.lang.Object[] dequeueAll()

Removes all the elements from the queue and returns the values as array.

Returns:

dequeueAll

public java.lang.Object[] dequeueAll(java.lang.Object[] a)

Removes all the elements from the queue and returns the values as array.

Returns:

iterator

public java.util.Iterator iterator()

toString

public java.lang.String toString()

Log4j event Queue dumper

Returns:

String