Hi Friend,

Try the following code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class HideButton {
public static void main(String[] args) {
JFrame f = new JFrame("JFrame");
final JPanel p1 = new JPanel();
JButton a = new JButton("A");
JButton b = new JButton("B");
p1.add(a);
p1.add(b);
f.getContentPane().add(p1);

final JPanel p2 = (JPanel) f.getGlassPane();
p2.setVisible(true);
p2.setLayout(new GridBagLayout());
JButton c = new JButton("C");
p2.add(c);

f.setSize(150, 100);
f.setVisible(true);
c.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
p1.setVisible(false);
p1.repaint();
}
});
a.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,"Click Button B");
}
});
}
}

Hope that it will be helpful for you.
Thanks