How to set the shortcut key to a JCheckBox in Java?

A JCheckBox is a subclass of JToggleButton and it can be a small box that is either checked or unchecked. When we click on a JCheckBox, it changes from checked to unchecked or vice versa automatically. A JCheckBox can generate an ActionListener or ItemListener whenever the checkbox is changed. We can set the shortcut keys to a JCheckBox by using the setMnemonic() method.

Example

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JCheckBoxShortCutKeyTest extends JFrame {
   private JCheckBox checkBox;
   public JCheckBoxShortCutKeyTest() {
      setTitle("JCheckBoxShortCutKey Test");
      checkBox = new JCheckBox("Check or Press ALT-C");
      checkBox.setBorder(BorderFactory.createLineBorder(Color.lightGray));
      checkBox.setMnemonic('C');
      add(checkBox, BorderLayout.CENTER);
      checkBox.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent evt) {
            JOptionPane.showMessageDialog(null, "A Checkbox checked or pressed");
         }
      });
      setSize(400, 300);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setLocationRelativeTo(null);
      setVisible(true);
   }
   public static void main(String args[]) throws Exception {
      new JCheckBoxShortCutKeyTest();
   }
}

Output