/* * Swing version. */import javax.swing.JApplet;import javax.swing.JButton;import java.awt.Toolkit;import java.awt.BorderLayout;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;public class Beeper extends JApplet                     implements ActionListener {    JButton button;    public void init() {        button = new JButton("Click Me");        getContentPane().add(button, BorderLayout.CENTER);        button.addActionListener(this);    }    public void actionPerformed(ActionEvent e) {        Toolkit.getDefaultToolkit().beep();    }}