src/main/java/mobi/designmyapp/common/util/UtilsFactory.java
public static DigestUtils getDigestUtils() {
    if (digestUtils == null) {
      try {
        Class clazz = Class.forName(DIGEST_UTILS);
        digestUtils = (DigestUtils) clazz.newInstance();
      } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
        LOGGER.warn("Cannot instanciate util: {}", e.getMessage());
        throw new IllegalStateException(e);
      }
    }
    return digestUtils;
  }
public static DigestUtils getDigestUtils() {
    if (digestUtils == null) {
      try {
        Class clazz = Class.forName(DIGEST_UTILS);
        digestUtils = (DigestUtils) clazz.newInstance();
      } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
        LOGGER.warn("Cannot instanciate util: {}", e.getMessage());
        throw new IllegalStateException(e);
      }
    }
    return digestUtils;
  }
Retrieve DigestUtils implementation
@return DigestUtils instance