RadioButtonSample.java Source code

Introduction

Here is the source code for RadioButtonSample.java

Source

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;

import javax.swing.AbstractButton;
import javax.swing.ButtonGroup;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JRadioButtonMenuItem;

public class RadioButtonSample {
    static Icon threeIcon = new ImageIcon("3.gif");

    static Icon fourIcon = new ImageIcon("4.gif");

    static Icon fiveIcon = new ImageIcon("5.gif");

    static Icon sixIcon = new ImageIcon("6.gif");

    public static void main(String args[]) {

        ActionListener actionListener = new ActionListener() {
            public void actionPerformed(ActionEvent actionEvent) {
                AbstractButton aButton = (AbstractButton) actionEvent.getSource();
                boolean selected = aButton.getModel().isSelected();
                System.out.println(actionEvent.getActionCommand() + " - selected? " + selected);
            }
        };

        ItemListener itemListener = new ItemListener() {
            public void itemStateChanged(ItemEvent itemEvent) {
                AbstractButton aButton = (AbstractButton) itemEvent.getSource();
                int state = itemEvent.getStateChange();
                String selected = ((state == ItemEvent.SELECTED) ? "selected" : "not selected");
                System.out.println(aButton.getText() + " - selected? " + selected);
            }
        };

        JFrame frame = new JFrame("Radio Menu Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JMenuBar menuBar = new JMenuBar();
        JMenu menu = new JMenu("Menu");
        ButtonGroup buttonGroup = new ButtonGroup();
        menu.setMnemonic(KeyEvent.VK_M);

        JRadioButtonMenuItem emptyMenuItem = new JRadioButtonMenuItem();
        emptyMenuItem.setActionCommand("Empty");
        emptyMenuItem.addActionListener(actionListener);
        buttonGroup.add(emptyMenuItem);
        menu.add(emptyMenuItem);

        JRadioButtonMenuItem oneMenuItem = new JRadioButtonMenuItem("Partridge");
        oneMenuItem.addActionListener(actionListener);
        buttonGroup.add(oneMenuItem);
        menu.add(oneMenuItem);

        JRadioButtonMenuItem twoMenuItem = new JRadioButtonMenuItem("Turtle Doves", true);
        twoMenuItem.addActionListener(actionListener);
        buttonGroup.add(twoMenuItem);
        menu.add(twoMenuItem);

        JRadioButtonMenuItem threeMenuItem = new JRadioButtonMenuItem("French Hens", threeIcon);
        threeMenuItem.addItemListener(itemListener);
        buttonGroup.add(threeMenuItem);
        menu.add(threeMenuItem);

        JRadioButtonMenuItem fourMenuItem = new JRadioButtonMenuItem("Calling Birds", fourIcon, true);
        fourMenuItem.addActionListener(actionListener);
        buttonGroup.add(fourMenuItem);
        menu.add(fourMenuItem);

        JRadioButtonMenuItem fiveMenuItem = new JRadioButtonMenuItem(fiveIcon);
        fiveMenuItem.addActionListener(actionListener);
        fiveMenuItem.setActionCommand("Rings");
        buttonGroup.add(fiveMenuItem);
        menu.add(fiveMenuItem);

        JRadioButtonMenuItem sixMenuItem = new JRadioButtonMenuItem(sixIcon, true);
        sixMenuItem.addActionListener(actionListener);
        sixMenuItem.setActionCommand("Geese");
        buttonGroup.add(sixMenuItem);
        menu.add(sixMenuItem);

        menuBar.add(menu);
        frame.setJMenuBar(menuBar);
        frame.setSize(350, 250);
        frame.setVisible(true);
    }
}