[Solved] Identify the error in this Spring Boot repository interface following enterprise patterns: public interface UserRepository { User findById(int id); } | Spring Boot

Spring Boot - Advanced Patterns

Identify the error in this Spring Boot repository interface following enterprise patterns:

public interface UserRepository {
    User findById(int id);
}

AMissing @Repository annotation

BUser class must be final

CInterface should extend JpaRepository or similar

DMethod name should be getUserById

Step-by-Step Solution

Solution:

Step 1: Check interface declaration for Spring Data JPA
Repository interfaces should extend JpaRepository or a similar interface to work properly.
Step 2: Verify other options
@Repository annotation is optional if extending JpaRepository; method name is fine; User class finality is unrelated.
Final Answer:
Interface should extend JpaRepository or similar -> Option C
Quick Check:
Repository interface must extend JpaRepository [OK]

Quick Trick: Repositories extend JpaRepository for Spring Data support [OK]

Common Mistakes:

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Identify the error in this Spring Boot repository interface following enterprise patterns: