How to disable JCheckBox if not checked in Java

The following is an example to disable JCheckBox if not checked in Java:

Example

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JCheckBox; import javax.swing.JOptionPane; public class SwingDemo {    public static void main(String[] args) {       JCheckBox checkBox = new JCheckBox("Demo", true);       checkBox.addActionListener(new ActionListener() {          public void actionPerformed(ActionEvent e) {             if (checkBox.isEnabled())                checkBox.setEnabled(false);             else                checkBox.setEnabled(true);          }       });       JOptionPane.showMessageDialog(null, checkBox);    } }

Output

Now, when you will uncheck the above checkbox, it will get disabled: