线程池

线程池

• Jdk 5起提供了线程池相关的API：ExecutorService和Executor

• ExecutorService：真正的线程池接口，常见子类：ThreadPoolExecutor

  • void executor(Runnable command)：执行任务/命令，没有返回值，一般用来执行Runnable
  • Future submit(Callable task)：执行任务，有返回值，一般用来执行callable
  • void shutdown()：关闭连接池
• Executors：工具类，线程池的工厂类，用于创建并返回不同类型的线程池

package com.thread.threadDemo;

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

/**
 * @Author suaxi
 * @Date 2020/11/26 22:00
 * 线程池
 */
public class TestPool {
    public static void main(String[] args) {
        //1、创建线程池
        //newFixedThreadPool 线程池大小
        ExecutorService service = Executors.newFixedThreadPool(10);

        //2、执行
        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("线程池测试");
    }
}