public static void main(String args[]) {
    // UIManager.put("PopupMenu.border", new BorderUIResource.EmptyBorderUIResource(4,0,4,0));

    try {
      UIManager.setLookAndFeel(QuaquaManager.getLookAndFeelClassName());
      //   UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
    } catch (Exception e) {
      e.printStackTrace();
    }
    JFrame f = new JFrame("PopupMenuTest: " + UIManager.getLookAndFeel().getName());
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(new PopupMenuTest());
    f.pack();
    f.setVisible(true);
  }
 public static void createAndShowGUI() {
   try {
     UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
   } catch (ClassNotFoundException
       | InstantiationException
       | IllegalAccessException
       | UnsupportedLookAndFeelException ex) {
     ex.printStackTrace();
   }
   JFrame frame = new JFrame("@title@");
   frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
   frame.getContentPane().add(new MainPanel());
   frame.pack();
   frame.setLocationRelativeTo(null);
   frame.setVisible(true);
 }