Welcome to the Hibernate CRUD guide! This tutorial will walk you through the basics of performing Create, Read, Update, and Delete (CRUD) operations using Hibernate in Java.

📘 What is CRUD?

CRUD stands for Create, Read, Update, Delete, which are the four fundamental operations in database management. Hibernate simplifies these operations through its ORM (Object-Relational Mapping) capabilities.

💻 Key Concepts

  1. Create - Saving new entities to the database.
    Session Management
  2. Read - Retrieving data from the database.
    Query Builder
  3. Update - Modifying existing entities.
    Hibernate Mapping
  4. Delete - Removing entities from the database.
    Session Close

📝 Hibernate CRUD Example

Here’s a quick example of Hibernate CRUD operations:

1. Save an Entity

Session session = sessionFactory.openSession();  
Transaction tx = session.beginTransaction();  
User user = new User("John", "Doe");  
session.save(user);  
tx.commit();  
session.close();

🔗 Learn more about Hibernate session management

2. Retrieve an Entity

Session session = sessionFactory.openSession();  
User user = session.get(User.class, 1);  
session.close();

🔗 Explore Hibernate query techniques

3. Update an Entity

Session session = sessionFactory.openSession();  
Transaction tx = session.beginTransaction();  
User user = session.get(User.class, 1);  
user.setEmail("john@example.com");  
session.update(user);  
tx.commit();  
session.close();

4. Delete an Entity

Session session = sessionFactory.openSession();  
Transaction tx = session.beginTransaction();  
User user = session.get(User.class, 1);  
session.delete(user);  
tx.commit();  
session.close();

🔄 Best Practices

  • Always use transactions for data integrity.
  • Close sessions properly to avoid resource leaks.
  • Leverage HQL (Hibernate Query Language) for efficient querying.

For advanced topics like Hibernate caching or lazy loading, check out our extended guides!