import java.util.Scanner;
import java.net.*;
import java.io.*;

public class HttpServerDemo{
  public static void main(String[] args) throws IOException{
  int port = 3001;
  ServerSocket serverSocket = new ServerSocket(port);
  Sysytem.out.println("Server started on port "  + port);
while(true){
   Socket socket = serverSocket.accept();
  System.err.println("Client connected");
  BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
  String s;
  while((s = in.readLine() != null )){
    System.err.println(s);
    if(s.isEmpty()){
      break;
    }
  }

  OutputStream clientOuput = socket.getOutputStream();
  clientOutput.write("HTTP/1.1 200 OK\r\n".getBytes());
  clientOutput.write("\r\n".getBytes());
  clientOutput.write("<b>Hello World</b>".getBytes());
  clientOutput.write("\r\n\r\n".getBytes());
  clientOutput.Flush();
  System.out.println("Client connection ended");
  in.close();
  clientOuput.close();
  
  
    }
  }
}