Java Utililty Methods URL Create

List of utility methods to do URL Create

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Description

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

Method

StringbuildUrl(String URL, Map params)
build Url 
if (URL == null)
    return null;
String qs = buildQueryString(params);
return URL.indexOf("?") < 0 ? URL + "?" + qs : URL + "&" + qs;
URLbuildUrl(String urlPrefix, String urlSuffix)
build Url 
String urlPrefixFixed = urlPrefix.trim();
while (urlPrefixFixed.endsWith("/")) { 
    urlPrefixFixed = urlPrefixFixed.substring(0, urlPrefixFixed.length() - 1);
URL url = new URL(urlPrefixFixed + "/" + urlSuffix);
return url;
StringbuildURL(URI base, Multimap params)
build URL 
if (params.isEmpty()) {
    return base.toString();
} else {
    return base + "?" + buildQueryString(params);
StringbuildUrlPath(String baseUrl, String childUrl)
build Url Path 
try {
    URI oldUri = new URI(baseUrl);
    URI resolved = oldUri.resolve(childUrl);
    return resolved.toString();
} catch (URISyntaxException e) {
    e.printStackTrace();
    return baseUrl;
ListbuildUrlsList(final String domain, final String... paths)
Builds a List of URL s given a domain and 1..N paths relative to the domain. 
return Arrays.stream(paths).map(p -> buildUrl(domain, p)).collect(Collectors.toList());
StringbuildURLString(Iterable elements, String joiner)
build URL String 
Iterator<String> iter = elements.iterator();
if (!iter.hasNext()) {
    return "";
String wholequery = iter.next();
try {
    while (iter.hasNext()) {
        wholequery += joiner + URLEncoder.encode(iter.next(), "UTF-8");
...
URIconcatenate(URL server, String address)
Builds a complete URI given a URL that specifies the server and a string that is the remainder of the query. 
try {
    return new URL(server, Preconditions.checkNotNull(address)).toURI();
} catch (MalformedURLException | URISyntaxException e) {
    throw new IllegalArgumentException(e);
URLconcatenateURL(final URL url, final String query)
Concatenates the given java.net.URL and query. 
try {
    if (url.getQuery() != null && url.getQuery().length() > 0) {
        return new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile() + "&" + query);
    } else {
        return new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile() + "?" + query);
} catch (final MalformedURLException ex) {
    throw new IllegalArgumentException("Could not concatenate given URL with GET arguments!", ex);
...
URLconcatenateURL(URL url, String query)
concatenate URL 
try {
    return url.getQuery() != null && url.getQuery().length() > 0
            ? new URL(url.getProtocol(), url.getHost(), url.getFile() + "&" + query)
            : new URL(url.getProtocol(), url.getHost(), url.getFile() + "?" + query);
} catch (MalformedURLException e) {
    throw new IllegalArgumentException("Concatenated URL was malformed: " + url.toString() + ", " + query);
URLconcatUrl(final URL baseUrl, final String extraPath)
concat Url 
try {
    URI uri = baseUrl.toURI();
    String newPath = uri.getPath() + (uri.getPath().endsWith("/") ? "" : "/") + extraPath;
    URI newUri = uri.resolve(newPath);
    return newUri.toURL();
} catch (Exception e) {
    throw new RuntimeException("Can't add extra path " + extraPath + " to url " + baseUrl, e);