Java Code

/** Example showing multiple ButtonGroups of JRadioButtons
 *  @author : E.S.Boese
 *  @version: Fall 2008
 */ 
import javax.swing.*;
import java.awt.*;
public class JRadioMultiGroups extends JApplet
{
   JRadioButton jb1,  jb2,  jb3, happy, mellow, sad;
   ButtonGroup colors, mood;
   Image img;
   ImageIcon icon;
   public void init( )
   {
	setLayout( new FlowLayout( ) );
   	jb1 = new JRadioButton( "red" );
   	jb2 = new JRadioButton( "blue" );
   	jb3 = new JRadioButton( "pink" );
   	happy = new JRadioButton( "Happy" );
   	mellow = new JRadioButton( "Mellow" );
   	sad = new JRadioButton( "Sad" );

   	addButtonIcons( jb1 );   	addButtonIcons( jb2 );
   	addButtonIcons( jb3 );   	addButtonIcons( happy );
   	addButtonIcons( mellow );	addButtonIcons( sad );   	

   	colors = new ButtonGroup( );
	colors.add( jb1 );	colors.add( jb2 );	colors.add( jb3 );

	mood = new ButtonGroup( );
   	mood.add( happy );	mood.add( mellow );	mood.add( sad );
	add( jb1 );		add( jb2 );		add( jb3 );
	add( happy );	add( mellow );	add( sad );
  }
   public void addButtonIcons( JRadioButton btn )
   {
		img = getImage( getCodeBase( ), "radioButtonRing.png");
		icon = new ImageIcon( img );
		btn.setIcon( icon );
	   	img = getImage( getCodeBase( ), "radioButtonSelected.png" );
	   	icon = new ImageIcon( img );
	   	btn.setSelectedIcon( icon );
   }
}