我正在使用Swing开发一个2D游戏。以前，我常常在jPanel上渲染对象和播放器，而不是

panel.repaint();

方法并覆盖panel类中的paint方法。然后我了解了将渲染代码移动到Render类的概念，如下所示：

public class Renderer{
    public void render(Graphics g, Game game){
        game.getObjects.forEach(gameObject -> g.drawImage(....);
    }
}

使用这段代码，在一个绘图上总是有一个绘图，....问题是我不能（或者不知道如何）调用面板的超级方法repaint（）。我想保留Render类，因为代码更加结构化。关于如何重置jPanel，有什么建议吗？
我尝试在调用render方法之前使用panel.repaint（），但我只是得到了一个空白屏幕。

public class Renderer {

public void render(Game game, Graphics graphics) {
    Player player = game.getPlayer();
    graphics.drawImage(player.getImage(), (int)player.getPosition().getX(), (int)player.getPosition().getY(), null);
    
}

}

public class Game{

private static Game instance;
private GamePanel gamePanel;
private Player player;
private Renderer renderer;
private boolean isRunning = true;
private final int MAX_FPS = 60;

private Game() {
    initialize();
    startGameLoop();
}

private void initialize() {
    renderer = new Renderer();
    player = Player.getInstance();
    gamePanel = GamePanel.getInstance(this);
    GameWindow.getInstance(gamePanel);
    
}

private void startGameLoop() {
    double timePerCycle = 1_000_000_000 / MAX_FPS;
    int updates = 0;
    long lastInfo = System.currentTimeMillis();
    long timeBefore = System.nanoTime();
    while(isRunning) {
        if(System.nanoTime() - timeBefore >= timePerCycle) {
            timeBefore = System.nanoTime();
            update();
            render();
            updates++;
        }
        
        if(System.currentTimeMillis() - lastInfo >= 1000) {
            System.out.printf("UPS: %d\n", (updates / (( System.currentTimeMillis() - lastInfo) / 1000)));
            lastInfo = System.currentTimeMillis();
            updates = 0;
        }
    }
    
}

private void render() {
    Graphics graphics = gamePanel.getGraphics();
    renderer.render(this, graphics);
    graphics.dispose();
}