Which of the following is the correct way to declare a Spring Data JPA repository interface for an entity User with primary key type Long?

easy📝 Syntax Q12 of 15

Spring Boot - Docker and Deployment

Which of the following is the correct way to declare a Spring Data JPA repository interface for an entity User with primary key type Long?

Apublic interface UserRepository extends Repository<User> {}

Bpublic interface UserRepository extends JpaRepository<User, Long> {}

Cpublic class UserRepository implements JpaRepository<User, Long> {}

Dpublic interface UserRepository extends CrudRepository<Long, User> {}

Step-by-Step Solution

Solution:

Step 1: Recall correct interface extension
Spring Data JPA repositories extend JpaRepository to get full CRUD support.
Step 2: Check syntax correctness
public interface UserRepository extends JpaRepository {} correctly extends JpaRepository with User entity and Long ID type; others misuse implements or wrong generics order.
Final Answer:
public interface UserRepository extends JpaRepository {} -> Option B
Quick Check:
JpaRepository syntax [OK]

Quick Trick: Use extends JpaRepository for repositories [OK]

Common Mistakes:

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