Client

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
public class Main
{

    public static void main(String[] args)
    {
        try
        {
            String host;
            if(args.length == 0)
            {
                host = "localhost";
            }
            else
            {
                host = args[0];
            }
            Socket socket = new Socket(host, 1337);
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

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

            String fromServer = "";
            while(!fromServer.equals("Bye!"))
            {
                while(!fromServer.equals("READY"))
                {
                    System.out.println(fromServer);
                    fromServer = in.readLine();
                }
                String choice = reader.readLine();
                //System.out.println("USER: " + choice);
                out.println(choice);
            }
            socket.close();
        } catch (UnknownHostException e)
        {
            System.out.println("Can't establish connection to the server");
        } catch (IOException e)
        {
            System.out.println("Wrong parameter");
            e.printStackTrace();
        }
    }

}