How to fetch using specific date from timestamp column in Criteriaquery?

Question

I have a timestamp column in database and want to query date like this 2023-07-27, Here is my snippet:

   List<Predicate> predicates = new ArrayList<>();
              SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
                    Date start_date = dateFormat.parse(startDate);
                if (request.getKey().equals("createdAt")) {
                    criteriaBuilder.equal(root.get("createdAt"),start_date);
                }

I cannot get value based on specific date for date range it works please help.