Program to use CheckboxGroup ( RadioButton ) AWT control in Java

//  Program to use CheckboxGroup ( RadioButton ) AWT control.
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="RadioButtonDemo" width="250" height="100">
</applet>
*/
public class RadioButtonDemo extends Applet implements ItemListener 
{
String msg = "";
Checkbox  cbRed, cbGreen, cbBlue;
CheckboxGroup  cbg;
public void init() 
{
 cbg = new CheckboxGroup();
 
 cbRed = new Checkbox("Red", cbg, true);
 cbGreen = new Checkbox("Green", cbg, false);
 cbBlue = new Checkbox("Blue", cbg, false);
 
 add(cbRed);
 add(cbGreen);
 add(cbBlue);
 
 cbRed.addItemListener(this);
 cbGreen.addItemListener(this);
 cbBlue.addItemListener(this);
}

public void itemStateChanged(ItemEvent ie) 
{
 repaint();
}
public void paint(Graphics g) 
{
 msg = "Color Selection: ";
 msg += cbg.getSelectedCheckbox().getLabel();
 g.drawString(msg, 6, 100);
}
}