Create new JCheckBox example

With this example we shall show you how to create JCheckBoxes in a Java Desktop Application. Checkboxes are very commonly used when we provide the user with a list of choices and we want him to pick as many as he wishes.

To create a JCheckBox you have to:

• Create a number of JCheckBoxes.
• Use setSelected method to set a check box checked by default. Otherwise the check box will be unchecked.
• Use add method to add the checkboxes to the frame.

 
Let’s see the code snippet that follows:

package com.javacodegeeks.snippets.desktop;

import java.awt.FlowLayout;

import javax.swing.JCheckBox;
import javax.swing.JFrame;

public class CreateNewJCheckBoxExample extends JFrame {

	private static final long serialVersionUID = 1L;

	public CreateNewJCheckBoxExample() {

		// set flow layout for the frame
		this.getContentPane().setLayout(new FlowLayout());

		JCheckBox checkBox1 = new JCheckBox();
		checkBox1.setText("Checkbox 1");

		JCheckBox checkbox2 = new JCheckBox("My Checkbox 2");

		// add checkboxes to frame
		add(checkBox1);
		add(checkbox2);

	}

	private static void createAndShowGUI() {

  //Create and set up the window.

  JFrame frame = new CreateNewJCheckBoxExample();

  //Display the window.

  frame.pack();

  frame.setVisible(true);

  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

	public static void main(String[] args) {

  //Schedule a job for the event-dispatching thread:

  //creating and showing this application's GUI.

  javax.swing.SwingUtilities.invokeLater(new Runnable() {

public void run() {

    createAndShowGUI(); 

}

  });
    }

}

 
This was an example on how to create a new JCheckBox.