testlist2.java

来自「疯狂Java讲义_源码(含Java设计模式CHM」· Java 代码 · 共 36 行

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
 */
class A
{
	public boolean equals(Object obj)
	{
		return true;
	}
}
public class TestList2
{
	public static void main(String[] args) 
	{
		List books = new ArrayList();
		books.add(new String("轻量级J2EE企业应用实战"));
		books.add(new String("Struts2权威指南"));
		books.add(new String("基于J2EE的Ajax宝典"));
		System.out.println(books);
		//删除集合中A对象，将导致第一个元素被删除
		books.remove(new A());
		System.out.println(books);
		//删除集合中A对象，再次删除集合中第一个元素
		books.remove(new A());
		System.out.println(books);
	}
}