import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JToggleButton;
import javax.swing.border.Border;
public class AButtonGroup {
public static void main(String args[]) {
JFrame frame = new JFrame("Button Group");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel(new GridLayout(0, 1));
Border border = BorderFactory.createTitledBorder("Examples");
panel.setBorder(border);
ButtonGroup group = new ButtonGroup();
AbstractButton abstract1 = new JToggleButton("Toggle Button");
panel.add(abstract1);
group.add(abstract1);
AbstractButton abstract2 = new JRadioButton("Radio Button");
panel.add(abstract2);
group.add(abstract2);
AbstractButton abstract3 = new JCheckBox("Check Box");
panel.add(abstract3);
group.add(abstract3);
AbstractButton abstract4 = new JRadioButtonMenuItem(
"Radio Button Menu Item");
panel.add(abstract4);
group.add(abstract4);
AbstractButton abstract5 = new JCheckBoxMenuItem("Check Box Menu Item");
panel.add(abstract5);
group.add(abstract5);
Container contentPane = frame.getContentPane();
contentPane.add(panel, BorderLayout.CENTER);
frame.setSize(300, 200);
frame.setVisible(true);
}
}