FULL PRODUCT VERSION :
Java 1.8.0_05

ADDITIONAL OS VERSION INFORMATION :
Mac OS X 10.9.2

A DESCRIPTION OF THE PROBLEM :
com.apple.eawt.OpenFilesHandler does not receive open events when double-clicking on a file that is associated with a webstart application.

- If the file is double-clicked when the application is not started yet, then the webstart application starts and the -open filename.xyz arguments are send to args[] parameter of main() method.
- If the file is doubled-clicked when the webstart application is already running, then Mac OS X brings the application to front on top of other windows but nothing else happens. OpenFilesHandler.openFiles() method is never called.

This bug may have a similar cause than the bug that was reported and already fixed for OpenURIHandler here:

http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8015303

If so then perhaps a similar patch could be used to fix OpenFilesHandler problem.

Note: Except OpenFilesHandler, all other handlers in com.apple.eawt.* package seem to work fine so this problem is limited to OpenFilesHandler only.

REGRESSION. Last worked in version 6u45


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import com.apple.eawt.*;

Application application = Application.getApplication();
application.setOpenFileHandler(new OpenFilesHandler() {
public void openFiles(final OpenFilesEvent e) {
System.out.println("OpenFileHandler()");
}
});
---------- END SOURCE ----------