DialogDisplayer & NotifyDescriptor

NotifyDescriptor d = new NotifyDescriptor.Confirmation(
  "Do you really want to exit the application?",
  "Exit",
  NotifyDescriptor.YES_NO_OPTION);
if(DialogDisplayer.getDefault().notify(d) == NotifyDescriptor.YES_OPTION) {
  return true;
}else{
  return false;
}

• Dialog API