code: public static String formatDateTime(CmsObject cms, long date) {
  
          return CmsDateUtil.getDateTime(
              new Date(date),
              DateFormat.MEDIUM,
              OpenCms.getWorkplaceManager().getWorkplaceLocale(cms));
      }
docs: Formats a date given the current user's workplace locale.<p>
  
  @param cms the current CMS context
  @param date the date to format
  
  @return the formatted date