code: protected Calendar createJavaCalendar (final long timeStamp)
    {
      final Calendar calendar = createJavaCalendar ();
      calendar.setTime (new Date (timeStamp));
      return calendar;
    }
docs: Build a <code>{@link Calendar}</code> for the given timeStamp. The new
  Calendar will use the <code>BaseCalendar</code> time zone if it is not
  <code>null</code>.