我无法在ExecutorService中停止/暂停线程

Question

我有ExecutorService并开始2个帖子。

    public class Test {

    private final ExecutorService threadPool = Executors.newFixedThreadPool(3);

    public void start() {
        threadPool.submit(new Runnable() {
            public void run() {
                for (int i = 0; i < 10; i++) {
                    if (!Thread.interrupted()) {
                        try {
                            Thread.currentThread().sleep(1000);
                        } catch (InterruptedException e) {
                            System.out.println("subject 1 stopped!");
                            Thread.currentThread().interrupt(); // restore interrupted status
                            return;
                        }
                        System.out.println("Hello!");
                    }
                }
            }
        });
        threadPool.submit(new Runnable() {
            public void run() {
                for (int i = 0; i < 10; i++) {
                    if (!Thread.interrupted()) {
                        try {
                            Thread.currentThread().sleep(1000);
                        } catch (InterruptedException e) {
                            System.out.println("subject 2 stopped!");
                            Thread.currentThread().interrupt(); // restore interrupted status
                            return;
                        }
                        System.out.println("By!");
                    }
                }
            }
        });
    }

    public void stop() {
        threadPool.shutdownNow();
    }
}

在Main class我想停一个Thread

public class Main {

    public static void main(String args[]) throws InterruptedException {
        System.out.println("Start");
        Test test = new Test();
        test.start();
        Thread.sleep(5000);
        test.stop();
    }
}

如何停止/暂停某些线程？