线程池

线程池：就是管理线程的池子

 测试创建

//测试线程池
public class TestPool {

    public static void main(String[] args) {

        //1.创建服务，创建线程池
        //newFixedThreadPool   参数为：线程池的大小
        ExecutorService service = Executors.newFixedThreadPool(10);

        //2.启动
         service.execute(new MyThread());
         service.execute(new MyThread());
         service.execute(new MyThread());
         service.execute(new MyThread());
         service.execute(new MyThread());

         //3.关闭连接
        service.shutdown();
    }
}
class MyThread implements Runnable{
    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName());
    }
}