Java tutorial
import java.awt.Container; import java.awt.GridLayout; import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JRadioButton; public class Main { public static void main(String args[]) { JFrame frame = new JFrame(); Container contentPane = frame.getContentPane(); contentPane.setLayout(new GridLayout(0, 1)); ButtonGroup group = new ButtonGroup(); JRadioButton option = new JRadioButton("French Fries", true); group.add(option); contentPane.add(option); option = new JRadioButton("Onion Rings", false); group.add(option); contentPane.add(option); option = new JRadioButton("Ice Cream", false); group.add(option); contentPane.add(option); frame.setSize(200, 200); frame.show(); } }