How to Program a JButton

Output:

Code:

/**

 * File: programJButton.java

 * Tiltle: How to Program a JButton

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

 */



//Java Core Package

import javax.swing.*;

//Java Extension Package

import java.awt.*;



public class programJButton extends JFrame {

	

	//Initializing JButton

	private JButton button;



	//Setting up GUI

    public programJButton() {

    	

    	//Setting up the Title of the Window

    	super("How to Program a JButton");



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

    	setSize(250,100);



    	//Exit Property of the Window

    	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);



    	//Constructing JButton

    	button = new JButton("My New JButton");



    	//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);



    	//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) {

    	programJButton pjb = new programJButton();

	}

}

Important Part of the Program:

//Constructing JButton

JButton button = new JButton("My New JButton");