private static CountDownLatch count = new CountDownLatch(1);
    public static void main(String[] args) throws InterruptedException {
        Thread t =Thread.currentThread();

        new Thread(()->{
            try {
                Thread.sleep(2000);
                t.interrupt();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }).start();

        System.out.println("阻塞....");
        count.await();
        System.out.println("=====");

    }
}