if (metadata.getTechnical().getAdditional() != null && metadata.getTechnical().getAdditional().getCompletionDate() != null) { GregorianCalendar gregorianCalendar = metadata.getTechnical().getAdditional().getCompletionDate().toGregorianCalendar(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_FORMAT); simpleDateFormat.setCalendar(gregorianCalendar);