public class MyThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool = new ThreadPoolExecutor(
                2,
                5,
                1L,
                TimeUnit.SECONDS,
                new LinkedBlockingDeque<Runnable>(3),
                Executors.defaultThreadFactory(),
                //默认抛出异常
                //new ThreadPoolExecutor.AbortPolicy()
                //回退调用者
                //new ThreadPoolExecutor.CallerRunsPolicy()
                //处理不来的不处理,丢弃时间最长的
                //new ThreadPoolExecutor.DiscardOldestPolicy()
                //直接丢弃任务,不予任何处理也不抛出异常
                new ThreadPoolExecutor.DiscardPolicy()
        );
        //模拟10个用户来办理业务 没有用户就是来自外部的请求线程.
        try {
            for (int i = 1; i <= 10; i++) {
                threadPool.execute(() -> {
                    System.out.println(Thread.currentThread().getName() + "\t 办理业务");
                });
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            threadPool.shutdown();
        }
        //threadPoolInit();
    }
}