Spring Core – Page 10 – Sharp: NCLEX, Java & Python

Java: Controllers, Services, Repositories

Why is it important to separate concerns across @RestController, @Service, and @Repository in Spring?

What are the benefits of using constructor injection in Spring Boot?

How does transaction self-invocation affect method calls in a @Service class?

Why is @ComponentScan used in a Spring Boot application?

How would you explain a common pitfall of using field injection in an interview?

How do @RestController and @Service differ in a Spring Boot app?

Why do teams use constructor injection in Spring in production code?

Why should service beans avoid stateful variables?

What belongs in the service layer during a checkout request?

Why does a @RestController in Spring architecture matter in this design?