private OrderSpecimenCommentsVo getFirstSpecimenCollected(OrderSpecimenCommentsVoCollection specimenColl) { if(specimenColl == null || specimenColl.size() == 0) return null; OrderSpecimenCommentsVo specimenMin = specimenColl.get(0); for(OrderSpecimenCommentsVo specimen : specimenColl) { if(specimen == null) continue; if(specimenMin.getSysInfo().getCreationDateTime().isGreaterThan(specimen.getSysInfo().getCreationDateTime())) specimenMin = specimen; } return specimenMin; }