title: Robot keyPress not working in linux
body: <p>I used Robot class several times but I had no issues with it in Windows. 
  But this time I am using Fedora and if i try  </p>
  
  <p><code>keyPress(KeyEvent.VK_WINDOWS)</code> its not working.</p>
  
  <p>How to simulate pressing Windows key in linux(Fedora)? </p>
  
  <p>P.S: I even tried <code>Event.META_MASK</code> but no luck</p>