Dirty menu selection handling

• Assume each MenuItem has its own (distinct) label.
• Frame's action() examines label and branches accordingly

class MyFrame extends Frame {
   public boolean action(Event evt, Object what) {
      if (evt.target instanceof MenuItem) {
         if (evt.arg.equals("Quit")) {
            // handle Quit button
         } else
         if (evt.arg.equals("New")) {
            // handle New button
         }
         return true;
      }
      return super.action(evt, what);
   }
}