package package1;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

/**
 *
 * @author Bob
 */
public class Server {

    public static void main(String[] args) {

        int port = 7777;

        try {
            System.out.println("Hosting on: " + port);

            ServerSocket ss = new ServerSocket(port);

            while (true) {
                Socket s = ss.accept();
                System.out.println("Connection established, ip: "+s.getInetAddress().toString());
                Thread t = new Connection(s, port);
                t.start();
            }
        } catch (IOException e) {

        }
    }

    public static class Connection extends Thread {

        Socket s;
        int port;

        public Connection(Socket s, int port) {
            this.s = s;
            this.port = port;
        }

        @Override
        public void run() {
            try {
                PrintWriter out = new PrintWriter(s.getOutputStream(), true);
                out.println("Connected to the Server on port: " + port);
                s.close();
            } catch (IOException e) {
                System.err.println("Network error.");
            }
        }
    }
}

package package1;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

/**
 *
 * @author Bob
 */
public class Client {

    public static void main(String[] args) {
        int port = 7777;
        Socket s = getSocket(port);

        try {
            Scanner sc = new Scanner(s.getInputStream());
            System.out.println(sc.nextLine());
            s.close();
        } catch (Exception e) {

        }
    }

    private static Socket getSocket(int port) {
        Socket s = null;
        try {
            InetAddress ip = InetAddress.getByName("localhost");
            s = new Socket(ip, port);
        } catch (UnknownHostException ex) {
            System.err.println("Unknown host.");
        } catch (IOException ex) {
            System.err.println("Network error.");
        }
        return s;
    }
}