title: How to display HashMap Key in jsp/jstl
body: <p>I am new to JSP/JSTL.</p>
  
  <p>I have set a HashMap on request as follows </p>
  
  <pre><code>HashMap &lt;String, Vector&gt; hmUsers = new HashMap&lt;String, Vector&gt;();
  
  HashMap hmUsers = eQSessionListener.getLoggedinUsers();
  
  request.setAttribute("currentLoggedInUsersMap", hmUsers);
  </code></pre>
  
  <p>I am alerting HashMap in My jsp as follows</p>
  
  <pre><code>&lt;script&gt; alert("&lt;c:out value = '${currentLoggedInUsersMap}' /&gt;"); &lt;/script&gt;
  </code></pre>
  
  <p>All works as per my expectations till now.</p>
  
  <p>But if I try to get key of this HashMap as follow then nothing is alerted.</p>
  
  <pre><code>&lt;script&gt; alert("&lt;c:out value = '${currentLoggedInUsersMap.key}' /&gt;"); &lt;/script&gt;
  </code></pre>
  
  <p>Is there anything I am going wrong?</p>
  
  <p>Thanks in advance.</p>