title: IntelliJ: Display .java extension in Packages View
body: <p>I am pretty new to IntelliJ and I can't find an option to display all file extension in the packages view (in my case .java).</p>
  
  <p><a href="https://i.stack.imgur.com/M5fbV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/M5fbV.png" alt="My problem of the viewer"></a></p>
  
  <p>As you can see on the sceenshot it just says "Main" or "Controller" on the left package explorer view.</p>
  
  <p>Is there any option to make it display Main.Java and Controller.java (like in the editor view on the right side)?</p>
  
  <p>Thanks a lot!</p>