Java Socket implementation of Client.

SimpleTCPClient.java

import java.io.*;
import java.net.*;
import java.util.ArrayList;
import java.util.List;

class SimpleTCPClient
{
  private static Socket socket;
  private static InputStream input;
  private static InputStreamReader reader;
  private static BufferedReader br;
  private static OutputStream os;
  private static OutputStreamWriter osw;
  private static BufferedWriter bufferedWriter;

  public static void initialize(String hostname, int port) throws UnknownHostException, IOException{
    socket = new Socket(hostname, port);
    input = socket.getInputStream();
    reader = new InputStreamReader(input);
    br =new BufferedReader(reader);
    os = socket.getOutputStream();
    osw = new OutputStreamWriter(os);
    bufferedWriter = new BufferedWriter(osw);
  }

  public static boolean send(String msg) throws IOException{
    bufferedWriter.write(msg); bufferedWriter.flush();
    return true;
  }

  public static String receive() throws IOException{
    String message;
    String data="";
    while((message=br.readLine())!=null){
      System.out.println("N:"+message);
      data+=message;
    }
    return data;
  }

  public static void main(String args[]) throws UnknownHostException, IOException
  {
    initialize("misc.chal.csaw.io", 9000);

    String message = receive();
    send("Hiii\n");
    receive();
  }
}