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import java.util.*;

/**

* Description:

* <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>

* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee

* <br/>This program is protected by copyright laws.

* <br/>Program Name:

* <br/>Date:

* @author Yeeku.H.Lee kongyeeku@163.com

* @version 1.0

*/

class Err

{

}

public class TreeSetErrorTest

{

public static void main(String[] args)

{

TreeSet ts = new TreeSet();

//向TreeSet集合中添加两个Err对象

ts.add(new Err());

ts.add(new Err()); //①

}

}