title: Hash Map key check in JSTL
body: <p>Need help.I have a hash map which is returned from a spring controller to JSP.Is there a way just to check if a certain key exists irrespective of any value(the value may be null too)</p>
  
  <p>Say,  the below hash map is being sent from the controller </p>
  
  <pre><code>HashMap hmap = new HashMap();
  hmap.put("COUNTRY", "X");
  hmap.put("REGION", null);
  </code></pre>
  
  <p>If the key REGION exists ( value may be anything including null) then display some section in the jsp.</p>
  
  <p>I am trying to access the key as ${hmap['REGION']}</p>
  
  <p>Thanks in advance.</p>