ServerSockets正确接受但不接收任何数据

Question

我遇到了一个小问题（我不明白为什么，在其他应用程序中工作正常）与服务器 - 客户端对：

客户端

try (Socket socket = new Socket(host, 3307)) { // the host variable is written previously
    try {
        socket.getOutputStream().write(150);
        socket.getOutputStream().flush();
    }
    catch (IOException ex) {
        Logger.getLogger(PACSFunctions.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

服务器端：

public static void main(String[] args)  {
    try {
        ServerSocket ss = new ServerSocket(3307);
        Socket s = ss.accept();    //Accepts the connection without trouble;
        final String num = "" + s.getInputStream().read();  //The debugger stop after here!

        System.out.println(num);  //Never executed, why?

    } catch (IOException ex) {
        Logger.getLogger(Imagea.class.getName()).log(Level.SEVERE, null, ex);
    }
}