线程池

1. 基本应用

   public class Demo {
       public static void main(String[] args) throws IOException, InterruptedException {
           ExecutorService pool = Executors.newFixedThreadPool(2);
           pool.submit(new MyRunnable());
           pool.submit(new MyRunnable());
           
           pool.shutdown(); // 关闭线程池
       }
   }
   
   class MyRunnable implements Runnable {
       @Override
       public void run() {
           for (int i = 0; i < 10; i++) {
               System.out.println(Thread.currentThread().getName() + "....." + i);
           }
       }
   }