🍃 Spring Boot Interview Questions

Master Spring Framework with questions on dependency injection, REST APIs, JPA, and security

Spring Framework, dependency injection, REST APIs, JPA, and security

🍃 Spring Boot Framework

Comprehensive Spring Boot interview questions covering core concepts, REST APIs, security, and more

What is Spring Boot and its core features?

Medium

java

Explain Spring Boot dependency injection and beans

Medium

java

How do you implement JPA/Hibernate with Spring Data?

Hard

java

Explain Spring Security authentication and authorization

Hard

java

Explain important Spring Boot annotations

Medium

java

What are Spring Boot conditional and configuration annotations?

Hard

java

Explain Spring AOP and common use cases

Hard

java

How do Spring Boot Profiles work and how do you activate them?

Medium

Spring Profiles provide a way to segregate parts of your application configuration and make it available only in certain environments (dev, test, prod).

Java

What is the difference between Singleton and Prototype bean scopes in Spring?

Medium

Spring Bean scopes determine how many instances of a bean are created and how they are shared. Singleton (default) creates one instance per container, while Prototype creates a new instance each time.

Java

How do you configure properties in Spring Boot?

Medium

Spring Boot provides multiple ways to externalize configuration through property files, YAML, environment variables, and command-line arguments.

Java

What is Spring Boot Actuator and monitoring?

Medium

java

Explain Spring Data query methods and advanced features

Hard

java

Spring Boot Interview Tips

✓ Understand the difference between @Component, @Service, @Repository, @Controller
✓ Know Spring Boot auto-configuration and starter dependencies
✓ Be familiar with dependency injection patterns (constructor vs field)
✓ Understand Spring Security authentication and authorization
✓ Know how to work with Spring Data JPA and custom queries
✓ Practice writing unit and integration tests with MockMvc
✓ Understand profiles and externalized configuration
✓ Know Spring Boot Actuator for monitoring