Java Toggle Button (JToggleButton) - Swing Example

JToggleButton tgBtn = new JToggleButton("On / Off");
tgBtn.addActionListener(new ActionListener() {
	public void actionPerformed(ActionEvent e) {
		if (tgBtn.isSelected()) {
			// State : on
		} else {
			//State : off
		}
	}
});

package com.java.myapp;

import java.awt.EventQueue;

import javax.swing.JFrame;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JLabel;
import javax.swing.JToggleButton;

public class MyForm extends JFrame {

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				MyForm frame = new MyForm();
				frame.setVisible(true);
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public MyForm() {

		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 362, 249);
		setTitle("ThaiCreate.Com Java GUI Tutorial");
		getContentPane().setLayout(null);

		// Label Status
		final JLabel lblStatus = new JLabel("lblStatus");
		lblStatus.setBounds(141, 127, 73, 14);
		getContentPane().add(lblStatus);
		
		// Toggle Button
		final JToggleButton tgBtn = new JToggleButton("On / Off");
		tgBtn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if (tgBtn.isSelected()) {
					tgBtn.setText("Click to Off");
					lblStatus.setText("State : on");
				} else {
					tgBtn.setText("Click to On");
					lblStatus.setText("State : off");
				}
			}
		});
		tgBtn.setBounds(110, 77, 121, 23);
		getContentPane().add(tgBtn);
		
	}
}