Bird
0
0

Which annotation is used to mark the main class in a Spring Boot application?

easy📝 Syntax Q12 of 15
Spring Boot - Fundamentals
Which annotation is used to mark the main class in a Spring Boot application?
A@Controller
B@Service
C@Entity
D@SpringBootApplication
Step-by-Step Solution
Solution:

  1. Step 1: Identify main class annotation

    The main class in Spring Boot is marked with @SpringBootApplication to enable auto-configuration and component scanning.

  2. Step 2: Review other annotations

    @Controller is for web controllers, @Entity for database entities, and @Service for service layer components, not for main app class.

  3. Final Answer:

    @SpringBootApplication -> Option D

  4. Quick Check:

    Main class annotation = @SpringBootApplication [OK]
Quick Trick: Main class uses @SpringBootApplication annotation [OK]
Common Mistakes:
  • Confusing @Controller with main class annotation
  • Using @Entity or @Service incorrectly for main class
  • Missing the auto-configuration role of @SpringBootApplication

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Spring Boot Quizzes
Application Configuration - application.properties structure - Quiz 10hard Application Configuration - Configuration precedence order - Quiz 7medium Inversion of Control and Dependency Injection - IoC container mental model - Quiz 12easy Inversion of Control and Dependency Injection - Bean lifecycle overview - Quiz 4medium REST Controllers - @RequestBody for JSON input - Quiz 9hard REST Controllers - @PathVariable for URL parameters - Quiz 12easy Request and Response Handling - Request validation preview - Quiz 1easy Request and Response Handling - JSON serialization with Jackson - Quiz 14medium Spring Boot Fundamentals - Application.properties basics - Quiz 3easy Spring Boot Fundamentals - Spring Initializr for project creation - Quiz 3easy