Java Programming - MCQ Practice Questions

@Component is a generic stereotype, while @Service is a specialized annotation indicating the class contains business logic, improving code readability.

DI reduces tight coupling between classes, making code more maintainable, testable, and flexible for changes or mock implementations during testing.

Spring raises NoUniqueBeanDefinitionException when ambiguity exists. Use @Primary or @Qualifier to resolve the ambiguity.

@Component, @Service, @Repository, and @Controller are all stereotype annotations that mark classes as Spring Beans. @Bean is used for method-level bean definition.

ApplicationContext is the core container that instantiates, configures, and manages beans. It also resolves dependencies and manages bean lifecycle.

Spring supports singleton, prototype, request, session, application, and websocket scopes. 'Eternal' is not a valid scope in Spring Framework.

Prototype scope creates a new bean instance each time it's requested, unlike singleton which creates only one instance for the entire application.

Stereotype annotations (@Service, @Repository, @Controller) enable classpath component scanning and convey the architectural role of the class.