Add some parsing error to file so the icon in explorer has red cross, e.g.:

  ...
  public App() {  }

  error

  public static void main (String args[]) { ...

Open property sheet, switch to source tab, click on three dot button in package property and then click on Cancel. Look at package in source - it will be "package <parsing error>;" Notice that you cli
ck on Cancel, no OK.

Remove error, compile it and click on explorer. Java Object still has red cross.


[Petr] "Source" tab was removed