ASelectedButton.java Source code

Introduction

Here is the source code for ASelectedButton.java

Source

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;

import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JToggleButton;
import javax.swing.border.Border;

public class ASelectedButton {
    public static void main(String args[]) {
        JFrame frame = new JFrame("Radio Buttons");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel(new GridLayout(0, 1));
        Border border = BorderFactory.createTitledBorder("Options");
        panel.setBorder(border);
        final ButtonGroup group = new ButtonGroup();
        AbstractButton abstract1 = new JRadioButton("One");
        panel.add(abstract1);
        group.add(abstract1);
        AbstractButton abstract2 = new JRadioButton("Two");
        panel.add(abstract2);
        group.add(abstract2);
        AbstractButton abstract3 = new JRadioButton("Three");
        panel.add(abstract3);
        group.add(abstract3);
        AbstractButton abstract4 = new JRadioButton("Four");
        panel.add(abstract4);
        group.add(abstract4);
        AbstractButton abstract5 = new JRadioButton("Five");
        panel.add(abstract5);
        group.add(abstract5);
        ActionListener aListener = new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                Enumeration elements = group.getElements();
                while (elements.hasMoreElements()) {
                    AbstractButton button = (AbstractButton) elements.nextElement();
                    if (button.isSelected()) {
                        System.out.println("The winner is: " + button.getText());
                        break;
                    }
                }
                group.setSelected(null, true);
            }
        };
        JToggleButton button = new JToggleButton("Show Selected");
        button.addActionListener(aListener);
        Container container = frame.getContentPane();
        container.add(panel, BorderLayout.CENTER);
        container.add(button, BorderLayout.SOUTH);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}