Add Event Listener on JButton

Output:

Code:

/**

 * File: jbuttonAddEvent.java

 * Tiltle: Add Event Listener on JButton

 * Author: http://java-code-complete.blogspot.com/

 */



//Java Core Package

import javax.swing.*;

//Java Extension Package

import java.awt.*;

import java.awt.event.*;



public class jbuttonAddEvent extends JFrame {

	

	//Initializing JButton

	private JButton button;



	//Setting up GUI

    public jbuttonAddEvent() {

    	

    	//Setting up the Title of the Window

    	super("Add Event Listener on JButton");



    	//Set Size of the Window (WIDTH, LENGTH)

    	setSize(300,100);



    	//Exit Property of the Window

    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);



    	//Constructing JButton

    	button = new JButton("Click Me for my First Event");



    	//Setting up the container ready for the components to be added.

    	Container pane = getContentPane();

    	setContentPane(pane);

    	

    	//Setting up the container layout

    	FlowLayout flow = new FlowLayout(FlowLayout.CENTER);

    	pane.setLayout(flow);

    	

    	//Implemeting Even-Listener on JButton using ActionListener

		button.addActionListener(

		new ActionListener() {

			

			//Handle JButton event if Enter key is pressed or if mouse is clicked.

			public void actionPerformed(ActionEvent event) {

				

				//Message to be displayed after the button is pressed or clicked.

				String message = "Event Listener Successfully Implemented";

				

				//Display the message using JOptionPane if the Event is successfully implemented.

				JOptionPane.showMessageDialog(null, message,"Event",JOptionPane.INFORMATION_MESSAGE);

			}

		}

		);



    	//Adding the JButton component to the container

    	pane.add(button);



    	/**Set all the Components Visible.

    	 * If it is set to "false", the components in the container will not be visible.

    	 */

    	setVisible(true);

    }

    

	//Main Method

    public static void main (String[] args) {

    	jbuttonAddEvent jbe = new jbuttonAddEvent();

	}

}

Important Part of the Program:

//Implemeting Even-Listener on JButton using ActionListener

		button.addActionListener(

		new ActionListener() {

			

			//Handle JButton event if Enter key is pressed or if mouse is clicked.

			public void actionPerformed(ActionEvent event) {

				

				//Message to be displayed after the button is pressed or clicked.

				String message = "Event Listener Successfully Implemented";

				

				//Display the message using JOptionPane if the Event is successfully implemented.

				JOptionPane.showMessageDialog(null, message,"Event",JOptionPane.INFORMATION_MESSAGE);

			}

		}

		);