Spring Boot - Inversion of Control and Dependency Injection
Which annotation is used to declare a class as a Spring Bean?
Which annotation is used to declare a class as a Spring Bean?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify annotations for beans
@Component marks a class as a Spring-managed bean.Step 2: Differentiate from other annotations
@Qualifier specifies which bean to inject, @Autowired injects beans, @RequestMapping maps web requests.Final Answer:
@Component -> Option BQuick Check:
@Component = Bean declaration [OK]
Quick Trick: Use @Component to declare beans; others serve different roles [OK]
Common Mistakes:
- Confusing @Autowired with bean declaration
- Using @RequestMapping for beans
- Thinking @Qualifier declares beans
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