Which of the following is the correct way to define a repository interface in Spring Boot following enterprise patterns?

easy📝 Syntax Q3 of 15

Spring Boot - Advanced Patterns

Apublic interface UserRepository implements JpaRepository<User, Long> {}

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

C@Repository public class UserRepository {}

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

Step-by-Step Solution

Solution:

Step 1: Recall repository pattern syntax
In Spring Boot, repository interfaces extend JpaRepository to inherit data access methods.
Step 2: Check syntax correctness
public interface UserRepository extends JpaRepository {} correctly declares an interface extending JpaRepository. public class UserRepository implements JpaRepository {} wrongly uses class with implements. @Repository public class UserRepository {} misses extending JpaRepository. public interface UserRepository implements JpaRepository {} incorrectly uses 'implements' with interface.
Final Answer:
public interface UserRepository extends JpaRepository<User, Long> {} -> Option D
Quick Check:
Repository interface syntax = extends JpaRepository [OK]

Quick Trick: Repository is an interface extending JpaRepository [OK]

Common Mistakes:

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