/* HWApplet.java */import java.awt.*;import java.awt.event.*;import java.applet.*;public class HWAppletextends Appletimplements ActionListener{ Button hello; Button world; AudioClip helloClip; AudioClip worldClip; public void init() { super.init(); setLayout(new FlowLayout()); hello = new Button("Hello"); hello.addActionListener(this); add(hello); world = new Button("World"); world.addActionListener(this); add(world); helloClip = getAudioClip(getCodeBase(),"hello.au"); worldClip = getAudioClip(getCodeBase(),"world.au"); } public void actionPerformed(ActionEvent event) { String cmd = event.getActionCommand(); if (cmd.equals("Hello")) { helloClip.play(); } else if (cmd.equals("World")) { worldClip.play(); } }}