Updated PR base on comments from code review by codemakerai-dev

Author: github-actions[bot]

example/OrderDao.java

@@ -36,16 +36,10 @@ public OrderDao(Session session) {
     public void save(Order order) {
         checkNotNull(order, "Order cannot be null");
 
-        Transaction transaction = null;
         try {
-            transaction = session.beginTransaction();
             session.save(order);
-            transaction.commit();
             logger.info("Order saved successfully");
         } catch (HibernateException e) {
-            if (transaction != null) {
-                transaction.rollback();
-            }
             logger.error("Error occurred while saving order", e);
             throw e;
         }