- 创建一个线程池 threadPoolExecutor 线程数量为threadCount,
- 执行methodA()方法,threadCount次
- 等待线程池的线程全部执行完,即latch为0
- shutdown()线程池
@Test public void test(int threadCount) { ExecutorService threadPoolExecutor = new ThreadPoolExecutor(
threadCount/2,
threadCount, 1L, TimeUnit.SECONDS, new LinkedBlockingQueue<>(threadCount), Executors.defaultThreadFactory(), new ThreadPoolExecutor.AbortPolicy()); CountDownLatch latch = new CountDownLatch(threadCount); //循环执行methodA()方法 for (int count = threadCount; count > 0; count--) { threadPoolExecutor.submit(() -> { try { methodA( ); } catch (Exception e) { log.error(e.getMessage(), e); } finally { latch.countDown(); } }); } //阻塞当前主线程,直到latch等于0 try { //阻塞当前线程,直到计数器的值为0 latch.await(); } catch (InterruptedException e) { e.printStackTrace(); } //关闭线程池 threadPoolExecutor.shutdown(); }