• JDk5.0起提供了线程池相关的API：ExecutorService和Executors
• ExectorService：真正的线程池接口。常见的子类ThreadPoolExecutor
  • void execute(Runnable command):执行任务/命令，没有返回值，一般用来执行Runnable
  • Futuresubmit(Callabletask):执行任务，有返回值，一般用来执行Callable
  • void shutdown():关闭线程池
• Executors：工具类，线程池的工具类，用于创并返回不同类型的线程池

package com.zeng.gaoji;
//创建线程池import com.sun.prism.es2.ES2Graphics;import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;public class TestPool {public static void main(String[] args) {//1.创建服务，创建线程池//newFixedThreadPool 参数为线程池的大小ExecutorService service = Executors.newFixedThreadPool(10);service.execute(new MyThread());service.execute(new MyThread());service.execute(new MyThread());service.execute(new MyThread());//关闭链接service.shutdown();}
}
class MyThread implements Runnable{@Overridepublic void run() {System.out.println(Thread.currentThread().getName());}
}

package com.zeng.gaoji;import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;//回顾总结线程的创建
public class ThreadNew {public static void main(String[] args) {new MyThread01().start();new Thread(new MyThread02()).start();FutureTask<Integer>futureTask=new FutureTask<Integer>(new MyThread03());new Thread(futureTask).start();try {Integer integer=futureTask.get();System.out.println(integer);} catch (InterruptedException e) {e.printStackTrace();} catch (ExecutionException e) {e.printStackTrace();}}
}
//1.继承Thread类
class MyThread01 extends Thread{@Overridepublic void run() {System.out.println("MyThread01");}
}
//2、实现Runnable接口
class MyThread02 implements Runnable{@Overridepublic void run() {System.out.println("MyThread02");}
}//3、实现Callable接口
class MyThread03 implements Callable<Integer> {@Overridepublic Integer call()throws Exception{System.out.println("MyThread03");return 100;}
}