title: Set up java sources for eclipse debugger
body: <p>you sure know the situation during debugging when the thread of execution suddenly isn't backed by source code and the icon "attach sources" appears... I can't find any settings where it could be set up. I always have to wait till the previously mentioned situation happens to set it up.</p>
  
  <p>Is there this configuration anywhere in preferences ? I really can't find it, thanks </p>