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Spring

100 Spring interview questions

Only coding challenges
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Spring Fundamentals


  • 1.

    What is the Spring Framework and what are its core features?

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  • 2.

    How do you create a simple Spring application?

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  • 3.

    What is Inversion of Control (IoC)? How does Spring facilitate IoC?

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  • 4.

    What is the ApplicationContext in Spring?

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  • 5.

    Explain Dependency Injection and its types in the Spring context.

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  • 6.

    What are Bean Scopes in Spring? Name them.

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  • 7.

    How do you configure a bean in Spring?

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  • 8.

    Describe the role of the Spring Core container.

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  • 9.

    What is a Spring configuration file?

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  • 10.

    How do you create an ApplicationContext in a Spring application?

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Spring AOP


  • 11.

    What is Aspect-Oriented Programming (AOP)?

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  • 12.

    How does Spring support AOP?

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  • 13.

    Can you explain a Pointcut and an Advice in Spring AOP?

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  • 14.

    What is a Join Point in Spring AOP?

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  • 15.

    What is the difference between a Concern and a Cross-cutting Concern in Spring AOP?

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  • 16.

    Describe the different types of Advices in AOP.

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  • 17.

    How do you implement AOP in Spring?

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  • 18.

    What is the @Aspect annotation used for in Spring AOP?

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  • 19.

    How would you enable AOP in a Spring application?

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Spring Data Access


  • 20.

    Describe how Spring interacts with databases.

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  • 21.

    What is the DataAccessException class in Spring?

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  • 22.

    Explain the Template design pattern as used in Spring.

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  • 23.

    What is the Spring JDBC Template and how do you use it?

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  • 24.

    How does Spring support transaction management?

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  • 25.

    Can you explain Spring’s support for ORM frameworks?

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  • 26.

    What are the key interfaces used for JDBC operations in Spring?

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Spring MVC


  • 27.

    What is the Spring MVC framework?

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  • 28.

    Describe the architecture of a Spring MVC application.

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  • 29.

    What are the roles of the @Controller and @RequestMapping annotations?

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  • 30.

    Explain the DispatcherServlet and its functions.

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  • 31.

    How do you handle web requests in Spring MVC?

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  • 32.

    Can you discuss the Request-response lifecycle in a Spring MVC application?

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  • 33.

    How do you validate user input in Spring MVC?

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  • 34.

    What are the differences between @Controller and @RestController?

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Spring Boot


  • 35.

    What is Spring Boot and what are its advantages?

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  • 36.

    How do you create a Spring Boot application?

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  • 37.

    Explain Auto-Configuration in Spring Boot.

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  • 38.

    What is a Spring Boot Starter?

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  • 39.

    How does Spring Boot support data access?

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  • 40.

    What is the embedded server concept in Spring Boot?

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  • 41.

    Explain the role of the SpringApplication class.

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  • 42.

    What properties file is used by default in Spring Boot?

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Spring Security


  • 43.

    What is Spring Security and why is it important?

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  • 44.

    Explain how authentication and authorization work in Spring Security.

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  • 45.

    How do you configure Spring Security in an application?

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  • 46.

    What is a Principal in Spring Security?

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  • 47.

    How do you secure Restful web services in Spring Security?

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  • 48.

    Explain the importance of the @PreAuthorize annotation.

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  • 49.

    What is the role of the WebSecurityConfigurerAdapter class?

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  • 50.

    How do you handle CSRF protection in Spring Security?

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Spring with Microservices


  • 51.

    How is Spring used in building microservices?

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  • 52.

    What is Spring Cloud?

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  • 53.

    Explain the role of Eureka in Spring Cloud.

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  • 54.

    How do you implement client-side load balancing with Spring Cloud?

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  • 55.

    What are Spring Cloud Config and its use case?

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  • 56.

    Can you explain the Circuit Breaker pattern in the context of Spring Cloud?

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  • 57.

    What is a Spring Cloud Gateway?

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Spring Reactive Programming


  • 58.

    What is Reactive Programming and how does Spring support it?

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  • 59.

    What is the WebFlux framework in Spring 5?

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  • 60.

    Explain the back-pressure concept in reactive streams.

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  • 61.

    How do you create a non-blocking REST API in Spring WebFlux?

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Spring Testing


  • 62.

    How do you perform unit testing in a Spring application?

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  • 63.

    What role does Spring TestContext Framework play in testing?

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  • 64.

    What is the @SpringBootTest annotation used for?

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  • 65.

    How do you mock beans in a Spring context for testing?

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Advanced Spring


  • 66.

    How does Spring support internationalization (i18n)?

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  • 67.

    Explain the concept of Spring Expression Language (SpEL).

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  • 68.

    How do you schedule tasks in Spring?

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  • 69.

    What is the difference between @Bean and @Component in Spring?

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  • 70.

    Explain the difference between @Inject and @Autowired in Spring.

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Spring Best Practices


  • 71.

    What are some best practices for designing Spring applications?

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  • 72.

    How do you handle exceptions in a Spring application?

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  • 73.

    What are the practices for securing passwords in Spring?

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  • 74.

    How can you improve the performance of a Spring-based web application?

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  • 75.

    When should you use Aspect-Oriented Programming in Spring?

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Spring Integration and Batch Processing


  • 76.

    What is Spring Integration and where is it best applied?

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  • 77.

    Explain the key components of Spring Batch and its use cases.

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  • 78.

    How does Spring Integration differ from Spring Batch?

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  • 79.

    What are endpoints in Spring Integration?

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  • 80.

    Explain the concept of Chunk processing in Spring Batch.

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Spring Cloud Data Flow


  • 81.

    What is Spring Cloud Data Flow and its benefits for data-driven applications?

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  • 82.

    How do you create custom processors in Spring Cloud Data Flow?

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  • 83.

    Explain how Spring Cloud Data Flow handles stream processing.

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Spring and Messaging


  • 84.

    How does Spring integrate with message brokers?

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  • 85.

    What is JMS (Java Message Service) and how does Spring provide support for it?

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  • 86.

    Explain the role of the @KafkaListener annotation in Spring.

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  • 87.

    How can you send and receive messages using AMQP in Spring?

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Spring Kafka


  • 88.

    What is Spring Kafka and how does it integrate with Apache Kafka?

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  • 89.

    How do you manage transactions in Kafka with Spring?

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  • 90.

    Explain the use of KafkaTemplate in Spring Kafka.

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Spring Caching


  • 91.

    How do you implement caching in a Spring application?

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  • 92.

    What is the Cache Abstraction in Spring?

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  • 93.

    Explain the differences between @CachePut, @CacheEvict, and @Cacheable annotations.

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Spring GraphQL


  • 94.

    How does Spring support building GraphQL APIs?

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  • 95.

    What are the advantages of using GraphQL over REST in Spring?

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Spring Actuator and Monitoring


  • 96.

    What is the Spring Boot Actuator and its purposes?

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  • 97.

    How do you expose custom metrics using Spring Boot Actuator?

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  • 98.

    Describe how to secure Spring Boot Actuator endpoints.

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Spring Application Deployment and Management


  • 99.

    What considerations should be made when deploying a Spring Boot application in a containerized environment?

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  • 100.

    How can you manage application profiles in a Spring Boot application?

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