多线程-线程池

 

public class test {
    public static void main(String[] args) {
        ExecutorService pool = Executors.newFixedThreadPool(2);
        // ExecutorService pool = Executors.newCachedThreadPool();//无限个

        pool.submit(new run());
        pool.submit(new run());
        pool.submit(new run());
        pool.submit(new run());
        pool.shutdown();

    }
}