/*
//看cpu的核数
//System.out.println(Runtime.getRuntime().availableProcessors());
* 第四种获取/使用java多线程的方式,线程池
* */
public class ExecutorTest {
    public static void main(String[] args) {
        //ExecutorService threadPool= Executors.newFixedThreadPool(5);//一池5个处理线程
        //ExecutorService threadPool=Executors.newSingleThreadExecutor();//一池一线程
        ExecutorService threadPool=Executors.newCachedThreadPool();//一池N线程
        try {
            for (int i = 1; i <= 10; i++) {
                //使用
                threadPool.execute(() -> {
                    //模拟10个用户来办理业务,每个用户就是一个来自外部的请求线程
                    System.out.println(Thread.currentThread().getName() + "\t 办理业务~！");
                });
                //try { TimeUnit.SECONDS.sleep(3);  } catch (InterruptedException e) {e.printStackTrace();}
            }
        }catch (Exception e){
        }finally {
            //关闭
            threadPool.shutdown();
        }
    }
}