What object-relational mapping tools are you familiar with and have used in practice?

Object-Relational Mapping (ORM) is a technology that allows working with a database through programming language objects, hiding SQL queries.

Among the ORM tools I have used in practice with Java:

• Hibernate — the most popular ORM framework, supports JPA, allows mapping classes to tables, managing sessions and transactions.
• Spring Data JPA — a wrapper over Hibernate, simplifying work with repositories and queries.
• MyBatis — although not a classic ORM, but a mapper, often used for flexible mapping of SQL queries to objects.

Example of using Hibernate:

@Entity
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    // getters and setters
}

// In the service
User user = entityManager.find(User.class, 1L);

Thus, ORM allows working with data as objects without worrying about SQL details.