Код на Java, HELP me :)

 public class Q237409324 implements Runnable {   
    private static final String FRAME_TITLE = "237409324";   
    private JFrame frame;   
    @Override   
    public void run() {   
        initComponents();   
        initEvents();   
        frame.pack();   
        frame.setLocationRelativeTo(null);   
        frame.setVisible(true);   
    }   
    private void initComponents() {   
        frame = new JFrame(FRAME_TITLE);   
        Container content = frame.getContentPane();   
        content.setLayout(new BorderLayout());   
        content.add(new DrawPanel(), BorderLayout.CENTER);   
    }   
    private void initEvents() {   
        frame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);   
        frame.addWindowListener(new WindowAdapter() {   
            @Override   
            public void windowClosing(WindowEvent e) {   
                frame.setVisible(false);   
                frame.dispose();   
            }   
        });   
    }   
    public static void main(String[] args) {   
        SwingUtilities.invokeLater(new Q237409324());   
    }   
    private static class DrawPanel extends JPanel {   
        private static final int WIDTH = 256;   
        private static final int HEIGHT = 256;   
        public DrawPanel() {   
            setPreferredSize(new Dimension(WIDTH, HEIGHT));   
        }   
        @Override   
        protected void paintComponent(Graphics gr) {   
            super.paintComponent(gr);   
            gr.setColor(Color.RED);   
            gr.drawLine(0, 0, WIDTH, HEIGHT);   
            gr.drawOval(getWidth() / 2, getHeight() / 2 - 32, 16, 16);   
            gr.drawRect(WIDTH / 8, HEIGHT / 4, WIDTH / 6, HEIGHT / 8);   
        }   
    }   
}