import java.util.HashMap;

 import java.util.Iterator;

 import java.util.LinkedHashMap;

 import java.util.Map;

 public class LinkedHashMapDemo {

     public static void main(String[] args) {

         HashMap<Integer,String> hm = new LinkedHashMap<Integer,String>();

         hm.put(7, "zhouqi");

         hm.put(3, "zhangsan");

         hm.put(1, "qianyi");

         hm.put(5, "wangwu");

         Iterator<Map.Entry<Integer,String>> it = hm.entrySet().iterator();

         while (it.hasNext())

         {

             Map.Entry<Integer, String> me = it.next();

             Integer key = me.getKey();

             String value = me.getValue();

             System.out.println(key+":"+value);

         }

     }

 }