title: Extract interfaces from a class
body: <p>I want to generate interface from my model class in eclipse/intelij</p>
  
  <p>generating from single class is quite easy</p>
  
  <p><strong>Right click --> Refactor --> generate interface</strong></p>
  
  <p>but the problem is i have 100's of classes.</p>
  
  <p>is there any tool/plugin or script which can generate multiple interface in 1 go from a single package.
  or any maven plugin to do so.</p>
  
  <p><a href="http://mojo.codehaus.org/gwt-maven-plugin/generateAsync-mojo.html" rel="nofollow">http://mojo.codehaus.org/gwt-maven-plugin/generateAsync-mojo.html</a></p>
  
  <p>here i got a plugin but it generate <code>generateAsync</code> </p>