title: What's the Strut's 2 equivalent of the Struts 1 logic:empty tag?
body: <p>What's the Strut's 2 equivalent of the Struts 1 logic:empty tag?</p>
  
  <pre><code>&lt;logic:empty name="foo"&gt;
     Foo is null or the empty string
  &lt;/logic:empty&gt;
  </code></pre>
  
  <p>Thanks.</p>