java networking, hangs at readline()

[Rob Brew]

Hi all.

I'm playing with networking in Java, i can receive using a client fine, but can't send using the same topic, the server freezes on readline();

code below what is wrong?

BattleServer.java

    public static void main(String[] args) {
        String s[] = init();
        try {
            ServerSocket serverSock = new ServerSocket(4242);
            
            while (true) {
                Socket sock = serverSock.accept();
                PrintWriter writer = new PrintWriter(sock.getOutputStream());
                BufferedReader reader = new BufferedReader(new InputStreamReader(sock.getInputStream()));
               
                for (int i = 0; i < s.length; i++) {
                writer.println(s[i]);
                System.out.println("Written" + s[i]);
                }
                System.out.println("This far");
                String result = reader.readLine();
                System.out.println("but no further");
                System.out.println("read " + result);
                writer.close();
            }
        } catch (IOException ex) {
           ex.printStackTrace();
        }
        
     
    }

NetLoad()

 public static void NetLoad(String todo) {


        int x[] = new int[4];
        int y[] = new int[4];
        String s;
        Ships.clear();

        try {
            Socket socket = new Socket("127.0.0.1", 4242);
            InputStreamReader streamReader = new InputStreamReader(socket.getInputStream());
            BufferedReader reader = new BufferedReader(streamReader);
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));


            while ((s = reader.readLine()) != null) {
                for (int i = 0; i < 4; i++) {
                    x[i] = Character.digit(s.charAt(i), 10);
                }
                for (int i = 5; i < 9; i++) {
                    int yMinus = (i - 5);
                    y[yMinus] = Character.digit(s.charAt(i), 10);


                }

                Ships.add(new Ship(x, y));
                x = new int[4];
                y = new int[4];
            }
            writer.write("hello");
            writer.flush();


        } catch (Exception ex) {
            ex.printStackTrace();
        }
        for (Ship ship : Ships) {
            ship.printShip();

        }

    }

[Ulf Dittmer]

Are those running on the same machine? Read Don't println to a Socket for a potential problem.

[Rob Brew]

On the same machine, BattleServer can send but locks on readline() to receive. Windows machines.