package dadsaclient;

import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

// Server IP is 192.168.200.40
public class DADSAClient {

    public static void main(String[] args) throws Exception {
        if (args.length != 1) {
            System.out.println("Enter IP As Argument");
            return;
        }
        try (Socket socket = new Socket(args[0], 59898)) {
            System.out.println("Enter lines of text then Ctrl+D or Ctrl+C to quit");
            Scanner scanner = new Scanner(System.in);
            Scanner in = new Scanner(socket.getInputStream());
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
            while (scanner.hasNextLine()) {
                out.println(scanner.nextLine());
                System.out.println(in.nextLine());
            }
        }
    }
}
-----------------------
package dadsaserver;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;

public class DADSAServer {

    public static void main(String[] args) throws Exception {
        try (ServerSocket listener = new ServerSocket(59898)) {
            System.out.println("The DADSA server is running...");
            ExecutorService pool = Executors.newFixedThreadPool(20);
            while (true) {
                pool.execute(new Process(listener.accept()));
            }
        }
    }

    private static class Process implements Runnable {

        private Socket socket;

        Process(Socket socket) {
            this.socket = socket;
        }

        @Override
        public void run() {
            System.out.println("Connected: " + socket);
            try {
                Scanner in = new Scanner(socket.getInputStream());
                PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
                while (in.hasNextLine()) {
                    out.println("Received OK: " + in.nextLine().toUpperCase());
                }
            } catch (Exception e) {
                System.out.println("Error: " + socket);
            } finally {
                try {
                    socket.close();
                } catch (IOException e) {
                }
                System.out.println("Closed: " + socket);
            }
        }
    }
}