线程池多线程使用示例

下面给出了一个网络服务的简单结构，这里线程池中的线程作为传入的请求。它使用了预先配置的 Executors.newFixedThreadPool(int) 工厂方法：

 class NetworkService implements Runnable {    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    } }