title: Eclipse package explorer doesn't show X-icons upon compilation problematic java files
body: <p>I've downloaded a brand new Eclipse from the official website. It's really nice.</p>
  
  <p>The thing is, when I change some java file causing a compilation error in another java file, the package explorer donsn't show the little X icon upon the errored file.</p>
  
  <p>When I open the errored file, the editor recognize that there is a bug there, mark the problematic line with red color. But still, in the package explorer - nothing.</p>
  
  <p>When I change the file and save it again, only then, it shows the X icon on the package explorer.</p>
  
  <p>I checked the "Build Automatically" on the project menu...</p>
  
  <p>Does anyone know what's wrong, or ever solved this thing??</p>
  
  <p>Thanks!</p>