title: Eclipse (Java) - After creating a new package, I'm unable to add source files to it
body: <p>I have a Java project open in Eclipse with a bunch of source files under the (default package). I created a new package in the project that I wanted to move all my source files into, but when I attempt to move them, nothing happens. The little package symbol for my new package is also white, unlike the usual brown package symbol. Anyone have any idea what's going on and how I can fix this?</p>
  
  <p>Also, I just wanted to make sure that once I get this working I don't have to actually move my source files to any new folders (as in, where the actual files are stored in the OS). All I have to do is put them into the package inside Eclipse, but the actual files can stay where they are in the OS file system, right?</p>
  
  <p>EDIT: Figured out that the source of the problem is that I only made references to my source files in Eclipse, and didn't actually copy them into it.</p>