java.util.Collections.synchronizedSet() 方法

package com.codingdict;

import java.util.*;

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

      // create set
      Set<String> set = new HashSet<String>();

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

      // create a synchronized set
      Set<String> synset = Collections.synchronizedSet(set);

      System.out.println("Synchronized set is :"+synset);
   }
}