Catching parent.SHOW event in child

Question

Is there a way to know in a child when a parent's show method gets called?
eg i have a JFrame and a Jpanel in it. and how can this jPnanel get to know when we call its parent's JFrame.show method?
i tried to overload JPanel's show() method but it doesn't get called!

Answer 1

import java.awt.event.*;
import javax.swing.*;
class ShowCatcher extends JFrame {
    public static void main(String[] args) {
        new ShowCatcher().go();
    void go() {
        init();
        try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); }
        setVisible(false);
        try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); }
        setVisible(true);
        try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); }
        setVisible(false);
        try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); }
        setVisible(true);
    void init() {
        setTitle("Show Demo");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        final MyPanel panel = new MyPanel();
        getContentPane().add(panel);
        addComponentListener(new ComponentAdapter() {
            public void componentShown(ComponentEvent e) {
                panel.notifyShown();
        setSize(300, 100);
        show();
    class MyPanel extends JPanel {
        private JTextField tf;
        private int count;
        public MyPanel() {
            tf = new JTextField(20);
            add(tf);
        void notifyShown() {
            tf.setText("JFrame has been shown " + ++count + " time(s).");
}