ExecutorService 创建线程池_executorservice shutdown后欣姐新建线程池-优快云博客

本文链接：https://blog.youkuaiyun.com/aiguozhe3/article/details/39344153

本文介绍了如何使用Java的ExecutorService创建固定大小的线程池来处理任务，并展示了一个网络服务应用的例子，该服务通过线程池接收并处理客户端请求。

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// 普通使用线程池

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

public class TestThread {

/**
* @param args
*/
public static void main(String[] args) {
try {
ExecutorService es = Executors.newFixedThreadPool(2);
for (int i = 0; i < 5; i++) { // 由于线程池大小为2，所以总的只会启动2个线程。
es.execute(new Print());
}
es.shutdown();

} catch (Exception ex) {
ex.printStackTrace();
}
}

}

class Print implements Runnable {

@Override
public void run() {
while(true) {
System.out.println("..running" + Thread.currentThread().getName());
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

}

// --------------- 网络应用线程池 --- 转载

public class NetworkService {
private final ServerSocket serverSocket;
private final ExecutorService pool;

public NetworkService(int port, int poolSize) throws IOException {
serverSocket = new ServerSocket(port);
pool = Executors.newFixedThreadPool(poolSize);
}

public void run() { // run the service
try {
for (;;) {
pool.execute(new Handler(serverSocket.accept()));
}
} catch (IOException ex) {
pool.shutdown();
}
}
}

class Handler implements Runnable {
private final Socket socket;

Handler(Socket socket) {
this.socket = socket;
}

public void run() {
// read and service request on socket
}
}