title: Alternative for hashmap
body: <p>I have a hashmap which has several values and it override the same keys, is there any solution for this? this is my Hashmap</p>
  
  <pre><code> HashMap&lt;String, String&gt; meMap=new HashMap&lt;String, String&gt;();
   meMap.put("Jack","John");
   meMap.put("Jack","Jacob");
  </code></pre>
  
  <p>it will override the first one.</p>