线程池实现多线程

public class RunnableImpDemo implements Runnable {
    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName());
    }
}

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService es= Executors.newFixedThreadPool(3);
        for(int i=0;i<5;i++){
            es.submit(new RunnableImpDemo());
        }
        es.shutdown();

    }
}