Why does the Void wrapper class exists in the JDK?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/643906/uses-for-the-java-void-reference-type">Uses for the Java Void Reference Type?</a>  </p>
</blockquote>



<p>What is the real usage of Void class in real world problems? In which scenario can we use this class?</p>
