package day04;
import
java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* 线程池
* 作用:
* 1:控制线程数量
* 2:重用线程
* @author Administrator
*
*/
public class ThreadPoolDemo {
public static void main(String[] args) {
//创建一个固定大小的线程池
ExecutorService threadPool
= Executors.newFixedThreadPool(2);
//指派5个任务给线程池
for(int i=0;i<5;i++){
Runnable runn = new Runnable(){
public void run(){
Thread t = Thread.currentThread();
System.out.
PRintln(
t.getName()+"正在运行任务..");
try {
Thread.sleep(5000);
} catch (InterruptedException e){
}
System.out.println(
t.getName()+"执行完任务了..");
}
};
//将任务交给线程池
threadPool.execute(runn);
}
threadPool.shutdownNow();
}
}
运行结果：
pool-1-thread-1正在运行任务...
pool-1-thread-2正在运行任务...
pool-1-thread-1执行完任务了..
pool-1-thread-1正在运行任务...
pool-1-thread-2执行完任务了..
pool-1-thread-2正在运行任务...
pool-1-thread-1执行完任务了..
pool-1-thread-1正在运行任务...
pool-1-thread-2执行完任务了..
pool-1-thread-1执行完任务了..
