Hi Friend,

Try the following code:

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

public class SwingProgram extends JFrame{

public JButton b = new JButton("Add");
public JTextField text = new JTextField(15);
public JPanel panel = new JPanel();
public SwingProgram() {
this.getContentPane().add(panel);
panel.add(b);
pack();
setVisible(true);
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("Add")) {
panel.add(text);
b.setText("Remove");
b.setActionCommand("Remove");
pack();
}else if (e.getActionCommand().equals("Remove")) {
panel.remove(text);
b.setText("Add");
b.setActionCommand("Add");
pack();
}
}
});
}
public static void main(String[] args) {
SwingProgram p = new SwingProgram();
}
}

Thanks