Flashcards

Quick study sessions to strengthen memory and retain key concepts.

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Java: Controllers, Services, Repositories

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

It encapsulates business logic. Frame the concept in practical terms so you can explain it during interview discussion.…

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Java: Controllers, Services, Repositories

Front

How can you handle transaction self-invocation in a Spring application?

Refactor to externalize calls to a separate bean. To handle transaction self-invocation, refactor the method call to an…

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Flashcard Study

Java: Controllers, Services, Repositories

Front

Why is field injection often discouraged in Spring?

It hides dependencies and complicates testing. Field injection directly injects dependencies into fields, making dependencies less visible and…

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Flashcard Study

Java: Controllers, Services, Repositories

Front

Why does a @Configuration class in Spring matter in practice?

To define beans and configuration settings. @Configuration classes are used to define beans and their configurations explicitly. This…

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Flashcard Study

Java: Controllers, Services, Repositories

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When should you use a prototype scope in Spring?

For beans needing a new instance per use. Frame the concept in practical terms so you can explain…

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Flashcard Study

Java: Controllers, Services, Repositories

Front

Which scope of a Spring Bean and its implication is the default in Java?

Singleton; a single instance per Spring container. By default, Spring beans are singleton, meaning there's only one instance…

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Java: Controllers, Services, Repositories

Front

Why can transaction self-invocation be problematic in Spring?

Self-invocation bypasses proxy, ignoring @Transactional. In Spring, transactional behavior is managed by a proxy. When a method calls…

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Java: Controllers, Services, Repositories

Front

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

Constructor injection ensures dependencies are set and promotes immutability. Constructor injection in Spring enforces that all required dependencies…

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Flashcard Study

Java: Controllers, Services, Repositories

Front

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

@RestController handles HTTP; @Service handles business logic. In Spring Boot, a @RestController is meant to manage HTTP requests…

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Flashcard Study

Java: Controllers, Services, Repositories

Front

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

Reduced testability and immutability. Frame the concept in practical terms so you can explain it during interview discussion.…

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