杀死future处理的阻塞线程

public class Test{
    public static void main(String[] args){
        ExecutorService pool = Executors.newFixedThreadPool(4);
        BlockingQueue<Future> queue = new LinkedBlockingQueue<Future>();
        for (int i = 0; i < 4; i++) {
            Future<Integer> future = pool.submit(new A());
            queue.add(future);
        }
        int j = 0;
        for (int i = 0; i < 4; i++) {
            Future<Integer> future = null;
            try {
                future = queue.take();
                j += future.get(2,TimeUnit.SECONDS);

            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (ExecutionException e) {
                e.printStackTrace();
            } catch (TimeoutException e) {
                System.out.println("超时了");
                future.cancel(true);   // 取消这个线程执行的任务，让线程空闲，线程池的这个线程可以执行新的任务
            }
        }
        System.out.println("超时线程总和"+(4-j));
        /*
            超时了
            超时了
            总和2
        */
    }

    static class A implements Callable<Integer>{
        @Override
        public Integer call() throws InterruptedException {

            Thread.sleep(5000);
            return 1;
        }
    }
}