import java.io.*;
import java.net.*;

public class MiniServer {
    public static void main(String args[]) {

 // declaration section:
 // declare a server socket and a client socket for the server
 // declare an input and an output stream

	ServerSocket echoServer = null;
	String line;
	DataInputStream is;
	PrintStream os;
	Socket clientSocket = null;

 // Try to open a server socket on port 9999
 // Note that we can't choose a port less than 1023 if we are not
 // privileged users (root)

	try {
            echoServer = new ServerSocket(9999);
	}
	catch (IOException e) {
            System.out.println(e);
	}   

 // Create a socket object from the ServerSocket to listen and accept 
// connections.
 // Open input and output streams

	try {
            clientSocket = echoServer.accept();
            is = new DataInputStream(clientSocket.getInputStream());
            os = new PrintStream(clientSocket.getOutputStream());

 // As long as we receive data, echo that data back to the client.

            while (true) {
		line = is.readLine();
		os.println(line); 
	    }
	}   
	catch (IOException e) {
            System.out.println(e);
	}
    }
}