我的代码有什么问题，我不能使用KeyPressed方法？

public void run() {
    setSize(700,700);
    setGame();
}
public GObject drawPlayer() {
    GOval player = new GOval(getWidth()/2,getHeight()/2,10,10);
    player.setFilled(true);
    player.setFillColor(Color.red);
    return player;
}
public void keyPressed(KeyEvent e) {
        switch(e.getKeyCode()) {
        case KeyEvent.VK_UP: Player.move(0, -10);break;
        case KeyEvent.VK_DOWN: Player.move(0, 10);break;
        case KeyEvent.VK_LEFT: Player.move(-10, 0);break;
        case KeyEvent.VK_RIGHT: Player.move(10, 0);break;
    }
}
public GRect object;
    public void setGame() {
    setObject();
    GObject Player = drawPlayer();
    add(Player);
    addKeyListeners();
}
public void run() {
    setSize(700,700);
    s