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

booleanisValidURL(String url)
Checks if the URL is valid or not. 
try {
    URL urlObj = new URL(url);
    String host = urlObj.getHost();
    assert !host.isEmpty();
    assert host.contains(".");
} catch (MalformedURLException e) {
    return false;
} catch (AssertionError e) {
...
booleanisValidURL(String url)
is Valid URL 
try {
    HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
    conn.setConnectTimeout(3000);
    conn.connect();
    conn.disconnect();
    return conn.getResponseCode() >= 200 && conn.getResponseCode() < 300;
} catch (Exception e) {
    e.printStackTrace();
...
booleanisValidURL(String url)
is Valid URL 
if (url.length() < 10)
    return false;
url = url.trim();
if (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("ftp://")) {
    String host = null;
    try {
        host = getHostName(url);
    } catch (MalformedURLException e) {
...
booleanisValidUrl(String url)
Check whether provided url string is a valid java java.net.URL 
try {
    if (Strings.isNullOrEmpty(url)) {
        return false;
    new URL(url);
    return true;
} catch (MalformedURLException e) {
    return false;
...
booleanisValidURL(String URL_String)
Opens up a connection with the given URL and returns true if the response code is 200 (success) 
try {
    URL url = new URL(URL_String);
    url.toURI();
} catch (MalformedURLException e) {
    return false;
} catch (URISyntaxException e) {
    return false;
return true;
booleanisValidURL(String urlStr)
is Valid URL 
return parseURI(urlStr) != null;
booleanisValidURL(String urlStr)
Checks whether the given string is a valid URL. 
if (urlStr == null) {
    return false;
try {
    URI uri = new URI(urlStr);
    if (uri.getScheme() == null) {
        return false;
    return uri.getScheme().equals("http") || uri.getScheme().equals("https");
} catch (URISyntaxException e) {
    return false;
URLisValidURL(String urlString)
is Valid URL 
try {
    return new URL(urlString);
} catch (Exception e) {
    return null;
booleanisValidUrl(URI uri)
is Valid Url 
try {
    uri.toURL();
} catch (MalformedURLException | IllegalArgumentException e) {
    return false;
return true;
booleanisValidURL(URL url)
is Valid URL 
try {
    if (isHttpUrl(url.toString())) {
        URLConnection connection = url.openConnection();
        if (connection instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            httpConnection.setConnectTimeout(1000);
            httpConnection.connect();
            int response = httpConnection.getResponseCode();
...