How to Efficiently Handle Keyboard and Mouse Events in Java's Full-Screen Exclusive Mode?

public class FullScreenTest extends JPanel {

    // Set up a JFrame for full screen exclusive mode
    private JFrame f = new JFrame("FullScreenTest");

    // Initialize an exit action and add it to the JFrame's root pane
    private Action exit = new AbstractAction(EXIT) {
        @Override
        public void actionPerformed(ActionEvent e) {
            // Close the JFrame when the exit action is triggered
            f.dispatchEvent(new WindowEvent(f, WindowEvent.WINDOW_CLOSING));
        }
    };

    private JButton b = new JButton(exit);
    
    // Create a FullScreenTest instance and add it to the JFrame
    public FullScreenTest() {
        // Add a button to the JPanel and set it as the default button for the JFrame
        this.add(b);
        f.getRootPane().setDefaultButton(b);
    
        // Register a KeyStroke for the exit action (in this case, the 'Q' key)
        this.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_Q, 0), EXIT);
    
        // Associate the exit action with the EXIT key
        this.getActionMap().put(EXIT, exit);
        
        // Add a MouseAdapter to handle mouse movement and display tooltips
        this.addMouseMotionListener(new MouseAdapter() {
            @Override
            public void mouseMoved(MouseEvent e) {
                FullScreenTest.this.setToolTipText(
                    "("+ e.getX() + "," + e.getY() + ")");
            }
        });
    }
    
    // Display the JFrame in full screen exclusive mode
    private void display() {
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice dev = env.getDefaultScreenDevice();
        
        // Configure the JFrame for full screen mode
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setBackground(Color.darkGray);
        f.setResizable(false);
        f.setUndecorated(true);
        f.add(this);
        f.pack();
        
        // Set the JFrame to be the full screen window
        dev.setFullScreenWindow(f);
    }
    
   // Create a main method and run the application in the EventQueue
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
        @Override
        public void run() {
            new FullScreenTest().display();
            }
        });
    }
}