初始化list

    public static void main(String[] args) {
        CyclicBarrier cyclicBarrier = new CyclicBarrier(2, () -> {
            System.out.println("====");
        });
        List<Integer> list = IntStream.rangeClosed(1, 100).boxed().collect(Collectors.toList());
        List<List<Integer>> partition = Lists.partition(list, 50);
        ExecutorService executorService = Executors.newFixedThreadPool(4);
        for (List<Integer> list1 : partition) {
            executorService.submit(()->{
                try {
                    Thread.sleep(2000);
                    cyclicBarrier.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } catch (BrokenBarrierException e) {
                    e.printStackTrace();
                }
            });
        }
    }