Spring Framework Master Class - Java Spring the Modern Way - Step 25 - @Component vs @Service vs @Repository vs @Control

The video tutorial explains the use of component annotations in Spring, focusing on the differences between @Component, @Controller, @Service, and @Repository. It discusses the roles of these annotations in web, business, and data layers of an application. Practical examples are provided to illustrate their usage. The video also highlights the benefits of using specific annotations, such as exception translation and logging, through AOP.

Why might you choose to use @Component over other specific annotations?

• When the component handles business logic

• When the component accesses a database

• When the component's role is unclear

• When the component is part of the web layer

Which annotation is used to define a component in the web layer of a Spring application?

• @Service

• @Repository

• @Controller

• @Component

What is the primary role of the @Service annotation in a Spring application?

• To encapsulate storage behavior

• To define a web controller

• To manage business logic

• To handle data access

In which layer would you typically use the @Repository annotation?

• Service layer

• Data layer

• Business layer

• Web layer

What is the purpose of using specific annotations like @Service and @Repository in Spring?

• To reduce the number of classes

• To improve application performance

• To enable additional functionalities like exception translation

• To simplify code readability

What feature does Spring provide when using the @Repository annotation?

• Security enhancements

• Automatic logging

• Exception translation

• Performance optimization

How can annotations like @Service and @Repository help in applying AOP (Aspect-Oriented Programming)?

• By simplifying database interactions

• By improving application speed

• By categorizing components for specific logic application

• By reducing code complexity