testpriorityqueue.java

疯狂Java讲义_源码(含Java设计模式CHM

import java.util.*;
/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestPriorityQueue
{
	public static void main(String[] args) 
	{
		PriorityQueue pq = new PriorityQueue();
		//下面代码依次向pq中加入四个元素
		pq.offer(6);
		pq.offer(-3);
		pq.offer(9);
		pq.offer(0);
		//输出pq队列，并不是按元素的加入顺序排列，而是按元素的大小顺序排列
		System.out.println(pq);
		//访问队列第一个元素，其实就是队列中最小的元素：-3
		System.out.println(pq.peek());
	}
}