title: how to get the one entry from hashmap without iterating
body: <p>Is there a elegant way of obtaining only one <code>Entry&lt;K,V&gt;</code> from HashMap, without iterating, if key is not known.</p>
  
  <p>As order of entry of entry is not important, can we say something like</p>
  
  <pre><code>hashMapObject.get(zeroth_index);
  </code></pre>
  
  <p>Although I am aware that there exist no such get by index method.</p>
  
  <p>If I tried approach mentioned below, <strong>it would still have to get all the entry set of the hashmap</strong>.</p>
  
  <pre><code>for(Map.Entry&lt;String, String&gt; entry : MapObj.entrySet()) {
      return entry;
  }
  </code></pre>
  
  <p>Suggestions are welcome.</p>
  
  <p>EDIT: Please suggest any other Data Structure to suffice requirement.</p>