TcpServer.java

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

public class TcpServer {
    public static void main(String[] args) throws Exception {
        ServerSocket sersock = new ServerSocket(4000);
        System.out.println("Server Connected, waiting for client");
        Socket sock = sersock.accept();
        System.out.println("Connection successful, waiting for filename");
        InputStream iStream = sock.getInputStream();
        BufferedReader nameRead = new BufferedReader(new InputStreamReader(iStream));
        String fname = nameRead.readLine();
        OutputStream ostream = sock.getOutputStream();
        PrintWriter pwrite = new PrintWriter(ostream, true);
        try {
            BufferedReader contentRead = new BufferedReader(new FileReader(fname));
            String str;
            while ((str = contentRead.readLine()) != null) {
                pwrite.println(str);
            }
            contentRead.close();
        } catch (FileNotFoundException e) {
            pwrite.println("File does not exist");
        } finally {
            System.out.println("Closing connection");
            pwrite.close();
            nameRead.close();
            sock.close();
            sersock.close();
        }
    }
 }