GregorianCalendar gcal = new GregorianCalendar(); gcal.setTimeInMillis(rs.getLong("utcdatetime")); d.setTimestamp((gcal)); r.add(d);
GregorianCalendar gcal = new GregorianCalendar(); gcal.setTimeInMillis(timestamp); p.setTimestamp((gcal)); ret.add(p);