import java.net.Socket;
import java.net.InetAddress;

import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.PrintWriter;
import java.io.IOException;

public class HelloClient {
    public static final int PORT = 2000;
    public static void main(String[] args) throws IOException {
        InetAddress addr;
        if (args.length >= 1)
            addr = InetAddress.getByName(args[0]);
        else
            addr = InetAddress.getByName(null);

        Socket socket = new Socket(addr, PORT);

        BufferedReader from_server = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        PrintWriter to_server = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
        // true: PrintWriter is line buffered

        BufferedReader kbd_reader = new BufferedReader(new InputStreamReader(System.in));

        String line_from_user;
        while (true) {
            System.out.print("Skriv en rad: ");
            line_from_user = kbd_reader.readLine();
            to_server.println(line_from_user);
            String line_from_server = from_server.readLine();
            if (line_from_server == null)
                break;
            System.out.println("Från servern: " + line_from_server);
        }
    } // main
} // HelloClient