Android studio - ScheduledExecutorService странная ошибка

Нужно дождаться выполнение всех потоков в Executor и завершить его:

public class MyRunnable implements Runnable {
    private int a;
    private int b;
    public MyRunnable(int a, int b) {
        this.a = a;
        this.b = b;
    }
    @Override
    public void run() {
        System.out.println(a + b);
    }
}
public class Application {
    public static void main(String[] args) throws InterruptedException {
        ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
        executorService.schedule(new MyRunnable(3, 2), 5, TimeUnit.SECONDS);
        executorService.shutdown();
        executorService.awaitTermination(10, TimeUnit.SECONDS);
    }
}