Java代码

    Map<String,String> map=new HashMap<String,String>();

    map.put("username", "qq");

    map.put("passWord", "123");

    map.put("userID", "1");

    map.put("email", "qq@qq.com");  

第一种用for循环

Java代码

    for(Map.Entry<String, String> entry:map.entrySet()){

         System.out.println(entry.getKey()+"--->"+entry.getValue());

    }  

第二种用迭代

用entrySet();

    Set set = map.entrySet();

    Iterator i = set.iterator();

    while(i.hasNext()){

         Map.Entry<String, String> entry1=(Map.Entry<String, String>)i.next();

         System.out.println(entry1.getKey()+"=="+entry1.getValue());

    }  

用keySet()迭代

    Iterator it=map.keySet().iterator();

    while(it.hasNext()){

         String key;

         String value;

         key=it.next().toString();

         value=map.get(key);

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

    }