import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/** Taken from Core Web Programming from 
 *  Prentice Hall and Sun Microsystems Press,
 *  http://www.corewebprogramming.com/.
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

public class JRadioButtonTest extends JPanel
                              implements ItemListener {

  public JRadioButtonTest() {
   
    String[] labels = {"Java Swing","Java Servlets",
                       "JavaServer Pages"};
    JRadioButton[] buttons = new JRadioButton[3];
    ButtonGroup group = new  ButtonGroup();

    for(int i=0; i<buttons.length; i++) {
      buttons[i] = new JRadioButton(labels[i]);
      buttons[i].setContentAreaFilled(false);
      buttons[i].addItemListener(this);
      group.add(buttons[i]);
      add(buttons[i]);
    }
  }

  public void itemStateChanged(ItemEvent event) {
    JRadioButton radiobutton = (JRadioButton)event.getItem();

    if (event.getStateChange() == ItemEvent.SELECTED) {
      System.out.println(radiobutton.getText() + " selected.");
    } else {
      System.out.println(radiobutton.getText() + " deselected.");
    }
  }

  public static void main(String[] args) {
    JPanel panel = new JRadioButtonTest();
    WindowUtilities.setNativeLookAndFeel();
    WindowUtilities.openInJFrame(panel, 400, 75);
  }
}