HashMap的遍历

    /**
      * HashMap的遍历建议entryset来进行遍历

      * Description:[方法功能中文描述]
      * 
      *
      * Created by [Administrator] [2019年3月1日]
      * Midified by [修改人] [修改时间]
      */
     public void testMapKeyVal() {
           Map map = new HashMap();
           Iterator iter = map.entrySet().iterator();
         while (iter.hasNext()) {
          Map.Entry entry = (Map.Entry) iter.next();
          Object key = entry.getKey();
          Object val = entry.getValue();
          System.out.println("key:"+key +"-----value:"+val);
         }
     }