code: public static String dateToString(final Date date, final String format) {
          if (date == null) {
              return null;
          }
          final DateFormat dateFormat = new SimpleDateFormat(format, Locale.US);
          return dateFormat.format(date);
      }
docs: Date to string.
  
  @param date
  the date
  @param format
  the format
  @return the string