import java.applet.*;
/*
<applet code="ChoiceDemo" width=300 height=180>
</applet>
*/
public class ChoiceDemo extends Applet implements ItemListener {
Choice os, browser;
String msg = "";
public void init() {
os = new Choice();
browser = new Choice();
// add items to os list
os.add("Windows XP");
os.add("Windows Vista");
os.add("Solaris");
os.add("Mac OS");
// add items to browser list
browser.add("Internet Explorer");
browser.add("Firefox");
browser.add("Opera");
// add choice lists to window
add(os);
add(browser);
// register to receive item events
os.addItemListener(this);
browser.addItemListener(this);
}
public void itemStateChanged(ItemEvent ie) {
repaint();
}
// Display current selections.
public void paint(Graphics g) {
msg = "Current OS: ";
msg += os.getSelectedItem();
g.drawString(msg, 6, 120);
msg = "Current Browser: ";
msg += browser.getSelectedItem();
g.drawString(msg, 6, 140);
}
}
Sample output is shown in Figure 24-4.
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