Problem in panel - its not appear

Question

Hi to all;
Here there is three panels . First Panel has label , when you press it you will go to the second panel . In the second panel there is a boutton when you press it third panel must be appeared but it is not appear .
why this ? please show me the correct way .
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class TestPro extends JFrame {
    private JPanel panel = new JPanel();
    private JLabel label1;
    private MyMouseListener myMouseListener;
    private TestPanel testPanel;
    public TestPro() {
        myMouseListener = new MyMouseListener();
        testPanel = new TestPanel();
        label1 = new JLabel("Start");
        label1.setFont(new Font("Monospaced", Font.BOLD, 30));
        label1.addMouseListener(myMouseListener);
        panel.add(label1);
        getContentPane().add(panel);
    public static void main(String[] args) {
        TestPro testPro = new TestPro();
        testPro.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        testPro.setResizable(false);
        testPro.setSize(new Dimension(600, 600));
        testPro.setLocationRelativeTo(null);
        testPro.setVisible(true);
    private class MyMouseListener extends MouseAdapter {
        @Override
        public void mouseEntered(MouseEvent e) {
            super.mouseEntered(e);
            label1.setForeground(Color.red);
        @Override
        public void mouseExited(MouseEvent e) {
            super.mouseExited(e);
            label1.setBackground(Color.BLACK);
        @Override
        public void mouseClicked(MouseEvent e) {
            super.mouseClicked(e);
            panel.setVisible(false);
            getContentPane().add(testPanel);
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
class TestPanel extends JPanel {
    private Box box;
    private JLabel label = new JLabel("New Panel");
    private JButton button = new JButton("Go>>>>>");
    private MyactionListener myactionListener;
    private AnotherPanel anotherPanel;
    public TestPanel() {
        myactionListener = new MyactionListener();
        anotherPanel = new AnotherPanel();
        box = Box.createVerticalBox();
        box.add(label);
        button.addActionListener(myactionListener);
        box.add(Box.createVerticalStrut(5));
        box.add(button);
        add(box);
    private class MyactionListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            setVisible(false);
            anotherPanel.setVisible(true);
            add(anotherPanel);
import java.awt.Font;
import javax.swing.JLabel;
import javax.swing.JPanel;
class AnotherPanel extends JPanel {
    private JLabel label=new JLabel("Another panel");
    public AnotherPanel() {
        label.setFont(new Font("Monospaced", Font.BOLD, 30));
        add(label);
}Thanks in advance .
Edited by: 804610 on Oct 22, 2010 6:29 PM

Answer 1

Thanks for your reply .
but in class TestPanel i did this :
    private class MyactionListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            setVisible(false);
            anotherPanel.setVisible(true);
            anotherPanel.revalidate();
            anotherPanel.repaint();
            add(anotherPanel);
    }but also the anotherPanel not appear when i press button . why?
hint: I want when i press button the TestPanel disappear .
thanks
Edited by: 804610 on Oct 22, 2010 7:03 PM