java.util.Collections.synchronizedSortedSet() 方法

package com.codingdict;

import java.util.*;

public class CollectionsDemo {
   public static void main(String[] args) {

      // create set
      SortedSet<String> set = new TreeSet<String>();

      // populate the set
      set.add("TP");
      set.add("IS");
      set.add("FOR");
      set.add("TECHIES");      

      // create a synchronized sorted set
      SortedSet sorset = Collections.synchronizedSortedSet(set);

      System.out.println("Sorted set is :"+sorset);
   }
}