//自定义排序
import java.util.*;
public class test62 {public static void main(String[] args){TreeSet tree=new TreeSet();//创建一个采用默认树形自然排序的对象tree.add(new Integer(50));tree.add(new Integer(150));tree.add(new Integer(250));tree.add(new Integer(450));tree.add(new Integer(350));tree.add(new Integer(750));//获取当前TreeSet的倒序排序器Iterator it=tree.descendingIterator();while(it.hasNext()){System.out.println(((Integer)it.next()).intValue()+' ');}}
}

运行结果