dateTimeTimestamp.setDateValue(new Date());
dateTimeTimestamp.setTimeValue(new Date());
GregorianCalendar calendar = new GregorianCalendar(2010, 1, 23);
calendar.set(GregorianCalendar.MILLISECOND, 123);
dateTimeTimestamp.setTimestampValue(calendar.getTime());
dateTimeTimestamp.save();
// execute matching select
Criteria criteria = new Criteria();
calendar = new GregorianCalendar(2010, 1, 23);
calendar.set(GregorianCalendar.MILLISECOND, 123);