title: Best java webframe backend for GWT frontend?
body: <p>What is the best java based web framework backend for a GWT frontend? </p>
  
  <p>Possible Backends: seam, jsf, spring web ... ? </p>
  
  <p>Specially I am interested in practical experience and PROS and CONS. </p>
  
  <p>Btw:
   - No dynamic typed Languages please
   - Have anybody tried seam or spring for this?</p>