code: private void addJarFileUrl(String jarFile)
      {
          if (jarUrls == null)
          {
              jarUrls = new HashSet<URL>();
          }
          try
          {
              jarUrls.add(new File(jarFile).toURI().toURL());
          }
          catch (MalformedURLException e)
          {
              log.error("Error while mapping jar-file url" + jarFile + "caused by:" + e.getMessage());
              throw new IllegalArgumentException("Invalid jar-file URL:" + jarFile + "Caused by: " + e);
          }
      }
docs: Adds jar file URL.
  
  @param jarFile
  jar file path