title: Difference between LENGTH[...] and fn:length(...) in JSP EL
body: <p>What is the difference between the <code>LENGTH[...]</code> and the JSTL function <code>fn:length(...)</code>?</p>
  
  <p>I tried to search to difference but I did not see any example that uses the first one.</p>
  
  <p>Here is an example:</p>
  
  <pre><code>&lt;c:when test="${object.field ne null || LENGTH[object.field] &gt; 0}"&gt; 
      &lt;td valign="top"&gt;
          .....print something
      &lt;/td&gt;
  &lt;/c:when&gt;
  </code></pre>