为什么客户端无法在此java nio程序中连接到服务器？

我正在用Java阅读Doug Lea的可扩展I / O，并遵循了Basic Reactor Design示例代码。但是启动服务器后，客户端无法连接到服务器。

这是Reactor类：

class Reactor implements Runnable {

    private static final Logger logger = LogManager.getLogger();

    final Selector selector;
    final ServerSocketChannel serverSocket;

    public Reactor(int port) throws IOException {
        selector = Selector.open();
        serverSocket = ServerSocketChannel.open();
        serverSocket.bind(new InetSocketAddress(port));
        serverSocket.configureBlocking(false);
        SelectionKey sk = serverSocket.register(selector, SelectionKey.OP_ACCEPT);
        sk.attach(new Acceptor());
        logger.info("server started.");
    }

    @Override
    public void run() {
        while (!Thread.interrupted()) {
            for (final Iterator<SelectionKey> it = selector.selectedKeys().iterator(); it.hasNext(); it.remove()) {
                dispatch(it.next());
            }
        }
    }

    private void dispatch(SelectionKey key) {
        Runnable r = (Runnable) key.attachment();
        if (r != null) {
            r.run();
        }
    }

    private final class Acceptor implements Runnable {
        @Override
        public void run() {
            try {
                SocketChannel c = serverSocket.accept();
                if (c != null) {
                    new Handler(selector, c);
                }
            } catch (IOException ex) {
                ex.getMessage();
            }
        }
    }

    public static void main(String[] args) throws IOException {
        new Reactor(9000).run();
    }
}

处理程序类

final class Handler implements Runnable {
    private static final Logger logger = LogManager.getLogger();

    final SocketChannel c;
    final SelectionKey key;
    ByteBuffer buffer = ByteBuffer.allocate(1024);

    public Handler(Selector sel, SocketChannel c) throws IOException {
        this.c = c;
        c.configureBlocking(false);
        key = c.register(sel, SelectionKey.OP_READ | SelectionKey.OP_WRITE);
        logger.info("client connected: " + c);
    }

    void read() throws IOException {
        if (!buffer.hasRemaining()) {
            return;
        }
        c.read(buffer);
    }

    void process() {/* */}

    void write() throws IOException {
        buffer.flip();
        c.write(buffer);
        c.close();
    }

    @Override
    public void run() {
        try {
            read();
            process();
            write();
        } catch (IOException ex) {
            ex.getMessage();
        }
    }
}

我的想法开始服务器，然后启动服务器，印在控制台 但是在我进入telnet localhost 9000的终端，客户端连接：不会出现。

问题来源：Stack Overflow