找错题

public void test() {
        List<String> tasks = new ArrayList<>();
        int i = 0;
        do {
            tasks.add("" + i);
        } while (i++ < 100);

        try {
            CountDownLatch latch = new CountDownLatch(tasks.size());
            tasks.stream().forEach((loanTask) -> {
                executor.submit(() -> {
                    Thread.currentThread().setName("LoanJob-" + UUID.randomUUID().toString());
                    handleData(loanTask);
                });
                latch.countDown();
            });
            latch.await();
        } catch (Exception e) {
            e.printStackTrace();
        }

        System.err.println("end");
    }

    public void handleData(String i) {
        System.err.println("H: " + i);
        int c = 1 / 0;
        System.err.println(c);
    }