java线程池最简单例子

package com.gas.test.Thread;

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

public class Concurrent4ThreadPool {
private ExecutorService exe = null;// 线程池
private static final int POOL_SIZE = 4;// 线程池的容量

public Concurrent4ThreadPool() {
exe = Executors.newFixedThreadPool(POOL_SIZE);// 创建线程池
System.out.println("the server is ready...");
}

public void server() {
int i = 0;
while (i < 100) {
exe.execute(new Worker(i));// 运行线程池
i++;
}
}

public static void main(String[] args) {
new Concurrent4ThreadPool().server();
}

class Worker implements Runnable // 工作线程，线程要完成的工作在此类中实现
{
int id;

Worker(int id) {
this.id = id;
}

public void run() {
System.out.println("task " + id + ":start");// 具体要做的事
}
}

}