如何并行运行两个while循环？ （Java）

Question

我想更有效地运行我的游戏。我想使用两个线程而不是一个线程。现在，我想使用一个while循环来并行运行这两个类。但是，如果我现在开始游戏，则在while循环在第一个线程中停止之前，不会释放第二个线程。 这是我的代码：

public class Game {

     public void Game() {
         Update update;
         Render render;

         update.start();
         render.start();
     }
}

class Update implements Runnable {
    private Thread thread;
    private boolean running;

    @Override
    public void run() {

       while(running) {
          //Update Stuff
       }

    }

    public synchronized void start() {
         if(running)
           return;
         running = true;
         thread = new Thread(this);
         thread.start();
    }
}

class Render implements Runnable {
    private Thread thread;
    private boolean running;

    @Override
    public void run() {

       while(running) {
          //Render Stuff
       }

    }

    public synchronized void start() {
         if(running)
           return;
         running = true;
         thread = new Thread(this);
         thread.start();
    }
}

如何同时启动两个线程？预先感谢。

Answer 1

类似的事情应该起作用：

public class Game {
    volatile boolean running = true;
    Thread updateThread;
    Thread renderThread;

    public void Game() {
    }

    public void start() {
        Update update = new Update(this);
        updateThread = new Thread(update);
        updateThread.start();
        Render render = new Render(this);
        renderThread = new Thread(render);
        renderThread.start();
    }

    public void waitForFinish() throws InterruptedException {
        updateThread.join();
        renderThread.join();
    }

    boolean isRunning() {
        return running;
    }
}

class Update implements Runnable {
    private final Game game;

    Update(Game game) {
        this.game = game;
    }

    @Override
    public void run() {

        while (game.isRunning()) {
            try {
                Thread.sleep(1000);
                System.out.println("Update");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }
}

class Render implements Runnable {
    private final Game game;

    Render(Game game) {
        this.game = game;
    }

    @Override
    public void run() {

        while (game.isRunning()) {
            try {
                Thread.sleep(100);
                System.out.println("Render");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }

}

private void test() throws InterruptedException {
    Game game = new Game();
    game.start();
    game.waitForFinish();
}