Java Code:
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;

public class Button2 extends JApplet {
  private JButton b1 = new JButton("Button 1"), b2 = new JButton("Button 2");

  private JTextField txt = new JTextField(10);

  class ButtonListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      String name = ((JButton) e.getSource()).getText();
      txt.setText(name);
    }
  }

  private ButtonListener bl = new ButtonListener();

  public void init() {
    b1.addActionListener(bl);
    b2.addActionListener(bl);
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(b1);
    cp.add(b2);
    cp.add(txt);
  }

  public static void main(String[] args) {
    run(new Button2(), 200, 75);
  }

  public static void run(JApplet applet, int width, int height) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(applet);
    frame.setSize(width, height);
    applet.init();
    applet.start();
    frame.setVisible(true);
  }
}