Server allows connections on socket 6123
import java.io.IOException; import java.net.InetAddress; import java.net.ServerSocket; import java.net.Socket; public class SocketDemo { public static void main(String[] args) { try { ServerSocket server = new ServerSocket(6123); while (true) { System.out.println("Listening"); Socket sock = server.accept(); InetAddress addr = sock.getInetAddress(); System.out.println("Connection made to " + addr.getHostName() + " (" + addr.getHostAddress() + ")"); pause(5000); sock.close(); } } catch (IOException e) { System.out.println("Exception detected: " + e); } } private static void pause(int ms) { try { Thread.sleep(ms); } catch (InterruptedException e) { } } }