public class MessageClient
{


    public static void main(String[] argv) {

        MessageClient client = new MessageClient();
        client.converse();
    }

    protected void converse()
    {
        int port = new Integer(9000).intValue();
        Socket sock = null;

        try
        {
            sock = new Socket("localhost", port);

            InputStream inputStream = sock.getInputStream();
            OutputStream outputStream = sock.getOutputStream();

            BufferedReader streamReader = new BufferedReader(new InputStreamReader(inputStream));
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            PrintStream printStream = new PrintStream(outputStream);

            String line = null;
            while ((line = reader.readLine()) != null)
            {
                printStream.print(line + "\n");
                String response = streamReader.readLine();
                System.out.println("Server response: " + response);
            }

        }
        catch (IOException e) {
            e.printStackTrace();
        }
    }
}


public class MessageServer
{

    public static void main(String[] argv) {

            MessageServer s = new MessageServer();
            s.converse();
    }

    protected void converse()
    {

        int port = new Integer(9000).intValue();
        ServerSocket sock = null;

        try
        {
            sock = new ServerSocket(port);
            Socket socket = sock.accept();

            InputStream inputStream = socket.getInputStream();
            OutputStream outputStream = socket.getOutputStream();

            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
            PrintStream printStream = new PrintStream(outputStream, true);

            String line = null;
            while ((line = reader.readLine()) != null)
            {
                System.out.println("From client: " + line);
                printStream.print("Thanks" + "\n");
            }

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