Java Utililty Methods IP Address Get

URL url = null;
final String[] websites = new String[] { "http://checkip.amazonaws.com", "http://myexternalip.com/raw",
        "https://wtfismyip.com/text", "https://api.ipify.org/" };
for (String website : websites) {
    try {
        url = new URL(website);
    } catch (MalformedURLException e) {
        continue;
...

String raw = downloadString("http://checkip.dyndns.org/");
raw = raw.substring(raw.indexOf(":") + 1).trim();
raw = raw.substring(0, raw.indexOf("<")).trim();
return raw;

String ip = "127.0.0.1";
try {
    for (Enumeration<NetworkInterface> ifaces = NetworkInterface.getNetworkInterfaces(); ifaces
            .hasMoreElements();) {
        NetworkInterface iface = ifaces.nextElement();
        for (Enumeration<InetAddress> addresses = iface.getInetAddresses(); addresses.hasMoreElements();) {
            InetAddress address = addresses.nextElement();
            ip = address.getHostAddress();
...

try {
    URL awsCheckIpUrl = new URL("http://checkip.amazonaws.com");
    BufferedReader br = new BufferedReader(new InputStreamReader(awsCheckIpUrl.openStream()));
    return br.readLine();
} catch (IOException e) {
    e.printStackTrace();
    return null;

String result = "0.0.0.0";
BufferedReader in = null;
String inputLine = "";
Pattern p = Pattern.compile("\\b(?:\\d{1,3}\\.){3}\\d{1,3}\\b");
Matcher m = p.matcher("");
try {
    URL ip = new URL("http://www.whatismyip.com/");
    in = new BufferedReader(new InputStreamReader(ip.openStream()));
...

String service1 = "http://checkip.amazonaws.com/";
String service2 = "http://bot.whatismyipaddress.com/";
URL url = new URL(service1);
String ip = "";
try (BufferedReader input = new BufferedReader(new InputStreamReader(url.openStream()))) {
    ip = input.readLine();
} catch (IOException ex) {
    url = new URL(service2);
...

String inputLine = "";
String read = "";
String ip = "";
URL url = new URL("http://checkip.dyndns.org/");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
while ((read = in.readLine()) != null) {
    inputLine += read;
...

final String IPV4_REGEX = "\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z";
String ipAddr = null;
Enumeration e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements()) {
    NetworkInterface n = (NetworkInterface) e.nextElement();
    Enumeration ee = n.getInetAddresses();
    while (ee.hasMoreElements()) {
        InetAddress i = (InetAddress) ee.nextElement();
...

return Collections.list(NetworkInterface.getNetworkInterfaces()).stream().filter(ni -> {
    try {
        return (!ni.isLoopback() && !ni.isPointToPoint());
    } catch (SocketException e) {
        throw new RuntimeException("Failed to check network interface!", e);
}).flatMap(ni -> Collections.list(ni.getInetAddresses()).stream()).filter(ia -> !ia.isLinkLocalAddress());

final String websites[] = { "http://ip.dorkbox.com/", "http://ip.javalauncher.com/",
        "http://checkip.dyndns.com/", "http://checkip.dyn.com/", "http://curlmyip.com/", "http://tnx.nl/ip",
        "http://ipecho.net/plain", "http://icanhazip.com/", "http://ip.appspot.com/", };
for (int i = 0; i < websites.length; i++) {
    try {
        URL autoIP = new URL(websites[i]);
        BufferedReader in = new BufferedReader(new InputStreamReader(autoIP.openStream()));
        String response = in.readLine().trim();
...