public static String getIpAddress() throws SocketException {
        Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces();
        InetAddress ip;
        while (allNetInterfaces.hasMoreElements()) {
            NetworkInterface netInterface = allNetInterfaces.nextElement();
            if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
                continue;
            } else {
                Enumeration<InetAddress> addresses = netInterface.getInetAddresses();
                while (addresses.hasMoreElements()) {
                    ip = addresses.nextElement();
                    if (ip instanceof Inet4Address) {
                        return ip.getHostAddress();
                    }
                }
            }
        }
        return null;
    }