Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.GridLayout;

import javax.swing.AbstractButton;
import javax.swing.ButtonGroup;
import javax.swing.ButtonModel;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Main {
    public static void main(String args[]) {
        JFrame frame = new JFrame("Grouping Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel(new GridLayout(0, 1));

        ButtonGroup group = new ButtonGroup();
        JRadioButton aRadioButton = new JRadioButton("A");
        JRadioButton bRadioButton = new JRadioButton("B");

        ChangeListener changeListener = new ChangeListener() {
            public void stateChanged(ChangeEvent changEvent) {
                AbstractButton aButton = (AbstractButton) changEvent.getSource();
                ButtonModel aModel = aButton.getModel();
                boolean armed = aModel.isArmed();
                boolean pressed = aModel.isPressed();
                boolean selected = aModel.isSelected();
                System.out.println("Changed: " + armed + "/" + pressed + "/" + selected);
            }
        };

        panel.add(aRadioButton);
        group.add(aRadioButton);
        panel.add(bRadioButton);
        group.add(bRadioButton);

        aRadioButton.addChangeListener(changeListener);
        bRadioButton.addChangeListener(changeListener);

        frame.add(panel);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }

}