Java Utililty Methods URL Value Check

List of utility methods to do URL Value Check

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Description

The list of methods to do URL Value Check are organized into topic(s).

Method

booleanisUrlValid(final URL url)
Quickly checks to see whether URL is reachable. 
final int timeout = 2000; 
if (url == null)
    return false;
try {
    final HttpURLConnection huc = (HttpURLConnection) url.openConnection();
    huc.setRequestMethod("HEAD");
    huc.setConnectTimeout(timeout); 
    final int responseCode = huc.getResponseCode();
...
booleanisUrlValid(URL url)
is Url Valid 
try {
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("HEAD");
    int responseCode = connection.getResponseCode();
    return (responseCode == 200);
} catch (IOException e) {
    e.printStackTrace();
return false;
booleanisValid(String candidateUrl)
Check if a given string is a valid url format. 
try {
    URL url = new URL(candidateUrl);
    return true;
} catch (MalformedURLException e) {
    return false;
booleanisValid(String url)
is Valid 
if (SIMPLE_URL_PATTERN.matcher(url).matches()) {
    try {
        new URI(url);
        new URL(url);
    } catch (MalformedURLException | URISyntaxException e) {
        return false;
    return true;
...
booleanisValidChannelUrl(String url)
is Valid Channel Url 
try {
    URI uri = new URI(url);
    return uri.getPath().contains("/channel/");
} catch (URISyntaxException e) {
    return false;
booleanisValidServerURL(String serverURL)
is Valid Server URL 
try {
    HttpURLConnection.setFollowRedirects(false);
    URL url = new URL(serverURL);
    int port = url.getPort();
    if (port == -1) {
        port = (url.getProtocol().equalsIgnoreCase("http") ? 80 : 443);
    Socket socket = new Socket(url.getHost(), port);
...
booleanisValidSuccessfulSignInURL(String url)
is Valid Successful Sign In URL 
try {
    URL urlObj = new URL(url);
    if (!urlObj.getProtocol().equals("https")) {
        return false;
    if (!urlObj.getAuthority().equals("www.facebook.com")) {
        return false;
    if (!urlObj.getHost().equals("www.facebook.com")) {
        return false;
    if (!urlObj.getPath().equals("/connect/login_success.html")) {
        return false;
    String ref = urlObj.getRef();
    if (ref == null) {
        return false;
    if (!ref.contains("access_token=")) {
        return false;
    return ref.contains("expires_in=");
} catch (MalformedURLException e) {
return false;
booleanisValidURL(CharSequence urlStr)
Determines if the passed string is a valid URL 
if (urlStr == null)
    return false;
try {
    new URL(urlStr.toString());
    return true;
} catch (Exception e) {
    return false;
booleanisValidURL(final String candidateString)

Checks that the specified string meets the requirements of the URL specification. 

boolean result;
try {
    new URL(candidateString);
    result = true;
} catch (Throwable throwable) {
    result = false;
return result;
...
booleanisValidURL(String link)
Checks a url is in a valid form or not. 
try {
    if ((link == null) || (link.length() == 0))
        return false;
    if (link.indexOf('.') == -1)
        return false;
    if (!URL_PATTERN.matcher(link).matches())
        return false;
    if (hasValidDomain(link))
...