code: public ResourceBundle getResourceBundle() {
          if (bundle == null) {
              String lang = "";
              String country = "";
              final String _locale = getPm().getCfg().getProperty("locale", "");
              if (_locale != null && !"".equals(_locale.trim())) {
                  final String[] __locale = _locale.split("[_]");
                  lang = __locale[0];
                  if (__locale.length > 1) {
                      country = __locale[1];
                  }
              }
              final Locale locale = new Locale(lang, country);
              bundle = ResourceBundle.getBundle("ApplicationResource", locale);
          }
          return bundle;
      }
docs: Returns local resource bundle for internationalization