SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

try {
                if (startDate != null && !startDate.isEmpty()) {
                    Predicate predicate = cb.greaterThanOrEqualTo(root.<Date>get(Customer_.crtTime),
                            sdf.parse(startDate));
                    predicates.add(predicate);
                }
                if (endDate != null && !endDate.isEmpty()) {
                    Calendar cal = Calendar.getInstance();
                    cal.setTime(sdf.parse(endDate));
                    cal.add(Calendar.DATE, 1);
                    Predicate predicate = cb.lessThanOrEqualTo(root.<Date>get(Customer_.crtTime), cal.getTime());
                    predicates.add(predicate);
                }
            } catch (ParseException e) {
                e.printStackTrace();
            }