Udp Server

public class Server {

    public static void main(String[] args) throws IOException {

        //test case flow
        byte[] sendData = new byte[50];
        DatagramSocket sendSock = new DatagramSocket();
        ServerSocket socket = new ServerSocket(57111);
                sendData = "server msg here".getBytes("UTF-8");
                sendSock.connect(InetAddress.getByName("10.0.2.15"), 57111);
                DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,InetAddress.getByName("10.0.2.15"), 57111);
                    sendSock.send(sendPacket);
                    System.out.println("pack sent");

    }
}