title: Is there any data structure similar to HashMap where I can add duplicate keys
body: <pre><code>HashMap&lt;String, String&gt; roleRightsID = new  HashMap&lt;String, String&gt;();
  </code></pre>
  <p>is there any data structure similar to HashMap where I can add duplicated keys</p>
  <p>For Example</p>
  <pre><code>USA, New York
  USA, Los Angeles
  USA, Chicago
  Pakistan, Lahore
  Pakistan, Karachi
  </code></pre>
  <p>etc</p>