title: Why use project clean in eclipse?
body: <p>I've been working as a Java developer for just short of a year now and am gradually trying to increase my knowledge to speed up development times. One of the habits I find myself doing is forcing an occasional <em>clean</em> without really knowing if I need it.</p>
  
  <p>I get that if you use it, your project will be completely re-built, however I don't fully understand under what circumstances I would want to use it. </p>
  
  <p>If I understand correctly, most, if not all, changes to a project will be built automatically, so with that there should only be a rare occasion that I would actually need to use a project clean. </p>