* String#equalsIgnoreCase}). However in almost all cases that ASCII strings are used, the author
   * probably wanted the behavior provided by this method rather than the subtle and sometimes
   * surprising behavior of {@code toUpperCase()} and {@code toLowerCase()}.
   *
   * @since 16.0
   */
  public static boolean equalsIgnoreCase(CharSequence s1, CharSequence s2) {

 * connect without authentication.
 *
 * ```java
 * for (Challenge challenge : response.challenges()) {
 *   // If this is preemptive auth, use a preemptive credential.
 *   if (challenge.scheme().equalsIgnoreCase("OkHttp-Preemptive")) {
 *     return response.request().newBuilder()
 *         .header("Proxy-Authorization", "secret")
 *         .build();
 *   }
 * }
 * return null; // Didn't find a preemptive auth scheme.

      if (responseCode != 200 || contentType == null) {
        return;
      }

      MediaType mediaType = MediaType.parse(contentType);
      if (mediaType == null || !mediaType.subtype().equalsIgnoreCase("html")) {
        return;
      }

      Document document = Jsoup.parse(response.body().string(), url.toString());
      for (Element element : document.select("a[href]")) {

     * @return the basedir of the repository
     * TODO need to URL decode for spaces?
     */
    private String basedir(String url) {
        String retValue = null;

        if (protocol.equalsIgnoreCase("file")) {
            retValue = url.substring(protocol.length() + 1);
            retValue = decode(retValue);
            // special case: if omitted // on protocol, keep path as is

                if (spacePos != -1) {
                    expectedChecksum = expectedChecksum.substring(0, spacePos);
                }
            }
            if (expectedChecksum.equalsIgnoreCase(actualChecksum)) {
                File checksumFile = new File(destination + checksumFileExtension);
                if (checksumFile.exists()) {

            String sourceHint,
            InputLocationTracker tracker) {
        if (string == null || string.length() <= 0) {
            return true;
        }

        if ("true".equalsIgnoreCase(string) || "false".equalsIgnoreCase(string)) {
            return true;
        }

        addViolation(
                problems,
                severity,
                version,

        if (proxies != null && repository.getProtocol() != null) {
            for (org.apache.maven.settings.Proxy proxy : proxies) {
                if (proxy.isActive() && repository.getProtocol().equalsIgnoreCase(proxy.getProtocol())) {
                    if (proxy.getNonProxyHosts() != null
                            && !proxy.getNonProxyHosts().isEmpty()) {
                        ProxyInfo pi = new ProxyInfo();

clean(String); public static String trim(String); public static String deleteWhitespace(String); public static boolean isNotEmpty(String); public static boolean isEmpty(String); public static boolean equals(String, String); public static boolean equalsIgnoreCase(String, String); public static int indexOfAny(String, String[]); public static int lastIndexOfAny(String, String[]); public static String substring(String, int); public static String substring(String, int, int); public static String left(String,...