code: public static String getCountry(final String localeString) {
          if (localeString.length() >= COUNTRY_END) {
              return localeString.substring(COUNTRY_START, COUNTRY_END);
          }
  
          return "";
      }
docs: Gets country from the specified locale string.
  
  @param localeString the specified locale string
  @return country, if the length of specified locale string less than 5, returns ""