自定义线程池

import java.util.concurrent.*;


public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool = new ThreadPoolExecutor(
                2,
                5,
                2L,
                TimeUnit.SECONDS,
                new ArrayBlockingQueue<>(3),
                Executors.defaultThreadFactory(),
                new ThreadPoolExecutor.AbortPolicy()
        );

        //10个顾客请求
        try {
            for (int i = 1; i <=10; i++) {
                //执行
                threadPool.execute(()->{
                    System.out.println(Thread.currentThread().getName()+" 办理业务");
                });
            }
        }catch (Exception e) {
            e.printStackTrace();
        }finally {
            //关闭
            threadPool.shutdown();
        }
    }
}