code: public static ResourceBundle getBundle(String bundleName, Locale locale) {
          ClassLoader classLoader = ClassLoader.getSystemClassLoader();
          if (classLoader == null) {
              classLoader = getLoader();
          }
          return getBundle(bundleName, locale, classLoader);
      }
docs: Finds the named {@code ResourceBundle} for the specified {@code Locale} and the caller
  {@code ClassLoader}.
  
  @param bundleName
  the name of the {@code ResourceBundle}.
  @param locale
  the {@code Locale}.
  @return the requested resource bundle.
  @throws MissingResourceException
  if the resource bundle cannot be found.