queue.java

来自「j2se程序」· Java 代码 · 共 45 行

package com.deitel.jhtp5.ch20;

public class Queue{
	private List queueList;
	
	// construct queue
	public Queue()
	{
		queueList = new List ( "queue" );
	}
	
	// add object to queue
	public synchronized void enqueue ( Object object, int[] info )
	{
		queueList.insertAtBack( object, info );
	}
	
	// remove objct from queue
	public synchronized int[] dequeue() throws EmptyListException
	{
		return queueList.removeFromFront();	
	}
	
	// determine if queue is empty
	public synchronized boolean isEmpty()
	{
		return queueList.isEmpty();	
	}
	
	// output queue contents
	public synchronized void print()
	{
		queueList.print();	
	}
	
	public synchronized int[] getInfo()
	{
		return queueList.getInfo();	
	}
	
	public synchronized Object getName()
	{
		return queueList.getName();	
	}
} // end class queue