public void setBirthDay(Vet obj, int index) { Date birthDay = new GregorianCalendar( Calendar.getInstance().get(Calendar.YEAR), Calendar.getInstance().get(Calendar.MONTH), Calendar.getInstance().get(Calendar.DAY_OF_MONTH), Calendar.getInstance().get(Calendar.HOUR_OF_DAY), Calendar.getInstance().get(Calendar.MINUTE), Calendar.getInstance().get(Calendar.SECOND) + new Double(Math.random() * 1000).intValue()) .getTime(); obj.setBirthDay(birthDay); }