public void test() {        List
     
       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);    }