code: private void initializeLocale() {
          final String locale = getProperty(LOCALE, applicationProperties);
          if (locale != null && !"".equals(locale)) {
              final String[] localeParts = locale.split("_");
              if (localeParts.length == 2) {
                  currentLocale = new Locale(localeParts[0], localeParts[1]);
              } else {
                  currentLocale = new Locale(localeParts[0]);
              }
          } else {
              currentLocale = Locale.getDefault();
          }
          logger.info(Messages.getMessage(CONTEXT_LOCALE_USED), currentLocale);
      }
docs: initialize Locale (fr, en).