Java全屏独占模式下如何处理用户输入？

import java.applet.Applet;
import java.awt.Color;
import java.awt.DisplayMode;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferStrategy;
import javax.swing.JFrame;
import javax.swing.Timer;

public class applet extends Applet {

    Timer timer;
    JFrame frame;
    DisplayMode[] displayModes = new DisplayMode[] {
            new DisplayMode(1280, 800, 32, 60)
    };

    BufferStrategy bufferStrategy;
    Rectangle bounds;

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    /**
     * @param args
     */

    public void init() {
        // ... Same as before
        // ...

        // Register key event listeners
        this.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_Q, 0), "EXIT");
        this.getActionMap().put("EXIT", new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // Exit key handling
            }
        });

        // Register mouse event listeners
        this.addMouseMotionListener(new MouseAdapter() {
            @Override
            public void mouseMoved(MouseEvent e) {
                // Mouse movement handling
            }
        });
    }

    // ... Same as before
    // ...
}