private Registry createRegistry( String expId, String participantId, String startDate, String endDate) { Expedition exp = manager.getExpedition(Integer.parseInt(expId)); Participant p = manager.getParticipant(Integer.parseInt(participantId)); Registry reg = null; try { reg = new Registry( exp, p, new Date(new SimpleDateFormat("yyyy-MM-dd").parse(startDate).getTime()), new Date(new SimpleDateFormat("yyyy-MM-dd").parse(endDate).getTime())); } catch (ParseException e) { e.printStackTrace(); } manager.addRegistry(reg); return reg; }