code: public static void closeQuietly(final JarFile aJarFile) {
          if (aJarFile != null) {
              try {
                  aJarFile.close();
              } catch (final IOException details) {
                  LOGGER.error(details.getMessage(), details);
              }
          }
      }
docs: Closes a {@link JarFile}, catching and logging any exceptions.
  
  @param aJarFile A supplied {@link JarFile} to close