The Difference Between CrudRepository and JPARepository in Java

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CrudRepository and JpaRepository are interfaces of the Spring Data repository library. Spring Data repositories access various data layers in the persistence layer by providing some predefined finders, thus reducing boilerplate code.

We need to extend this repository in the application before we can access all the methods available in these repositories. We can also add new methods using named queries or native queries based on business requirements.

Serial number	Key	JPAR repository	Crud repository
1	Hierarchy	JPA extends the crudRepository and PagingAndSorting repository	The original repository is a basic interface that acts as a marker interface.
2	Batch support	JPA also provides some methods related to JPA, such as batch deletion of records and directly refreshing data to the database.	It only provides CRUD functions, such as findOne, save, etc.
3	Pagination support	JPA repositories also extend the PagingAndSorting repository. It provides all methods that can be used for pagination.	Crud repositories do not provide methods for implementing pagination and sorting.
4	Use cases	JpaRepository connects your repository with JPA persistence technology, so it should be avoided.	We should use CrudRepository or PagingAndSortingRepository depending on whether you need sorting and pagination.

Example of JpaRepository

@Repository
public interface BookDAO extends JpaRepository {
　　　Book findByAuthor(@Param("id") Integer id);
{}

Example of CrudRepository

@Repository
public interface BookDAO extends CrudRepository {
　　　Book Event findById(@Param("id") Integer id);
{}

Basic Tutorial