[vassil_zorev]

Hey guys,
to the point:
I've got two "test classes" - one creates a JFrame instance and the other extends the JFrame class. They do exactly the same thing. The problem is one of them doesn't work. Now here are the classes:

Code:

public class GameTest {
    
    /**
     * Creates a new instance of GameTest
     */
    public GameTest() {
    }
    
    public void PlayAGame() {
        JFrame myFrame = new JFrame("Beginner Mode:");
        BeginnerMode panel = new BeginnerMode();
        myFrame.setSize(256,256);
        myFrame.setDefaultCloseOperation(myFrame.EXIT_ON_CLOSE);
        myFrame.getContentPane().add(panel);
        panel.PlayAGame();
        myFrame.pack();
        myFrame.setVisible(true);
    }
    
    public static void main(String ar[]){
        GameTest myGame = new GameTest();
        myGame.PlayAGame();
    }
}

Code:

public class Navigator extends javax.swing.JFrame {
    
    /** Creates new form Navigator */
    public Navigator() {
        initComponents();
    }
    
    public void PlayAGame() {
        BeginnerMode panel = new BeginnerMode();
        this.getContentPane().add(panel);
        panel.PlayAGame();
        this.pack();
        this.setVisible(true);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                          
    private void initComponents() {

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
        pack();
    }// </editor-fold>                        
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                Navigator gameStart = new Navigator();
                gameStart.PlayAGame();            }
        });
    }

The second one doesn't work. What might be the reason? The problem is that the BeginnerMode panel doesn't display itself in the Navigator frame...