Common Spring Core Interview Questions

Here are some common interview questions for the Spring Core module:

  1. Can you explain the concept of Inversion of Control (IoC) in Spring?
  2. What is Dependency Injection (DI) and how does it relate to IoC in Spring?
  3. Can you describe the different types of DI in Spring?
  4. How does Spring manage bean dependencies?
  5. Can you explain the role of the ApplicationContext in Spring?
  6. What is the difference between the ApplicationContext and the BeanFactory in Spring?
  7. Can you explain the use of the @Autowired annotation in Spring?
  8. How does the @Qualifier annotation work in Spring?
  9. Can you explain the role of the @ComponentScan annotation in Spring?
  10. What is the purpose of the @Bean annotation in Spring?
  11. Can you explain the use of the @Value annotation in Spring?
  12. How would you configure a bean in Spring using XML configuration?
  13. Can you explain the use of the @Configuration and @Bean annotations for bean configuration in Spring?
  14. How does the @Profile annotation work in Spring?
  15. Can you explain the use of the @Primary annotation in Spring?
  16. Can you describe the lifecycle of a bean in Spring?
  17. Can you explain the use of the @PostConstruct and @PreDestroy annotations in Spring?
  18. Can you describe the BeanPostProcessor interface in Spring and how it is used?
  19. Can you explain the use of the @Scope annotation in Spring and the different scopes available?
  20. Can you explain the use of the @Lazy annotation in Spring?
  21. Can you describe the role of the PropertyEditor in Spring?
  22. Can you explain the use of the ConversionService in Spring?
  23. How does the Resource abstraction work in Spring and what are the different types of Resource implementations available?
  24. Can you explain the use of the @PropertySource annotation in Spring?
  25. Can you explain the use of the Environment interface in Spring and how it is used to access properties?
  26. Can you explain the use of the @Value with SpEL (Spring Expression Language) in Spring?
  27. Can you explain the use of the @Order annotation in Spring?
  28. Can you explain the use of the @Import annotation in Spring?
  29. Can you describe the use of the @ImportResource annotation in Spring?
  30. Can you explain the use of Aspect Oriented Programming (AOP) in Spring?
  31. Can you describe the role of the @Aspect annotation in Spring AOP?
  32. Can you explain the use of the @Pointcut annotation in Spring AOP?
  33. Can you explain the use of the @Before, @After, @Around annotations in Spring AOP?
  34. Can you explain how you would use AOP to implement logging in a Spring application?
  35. Can you describe the use of the @Transactional annotation in Spring and how it works?
  36. Can you explain the different transaction propagation modes in Spring?
  37. Can you explain the use of the PlatformTransactionManager interface in Spring?
  38. Can you describe the use of the JdbcTemplate class in Spring and how it is used for database access?
  39. Can you explain the use of the NamedParameterJdbcTemplate class in Spring and how it is used for database access with named parameters?
  40. Can you describe the use of the SimpleJdbcInsert and SimpleJdbcCall classes in Spring for database access?
  41. Can you explain the use of the ApplicationContext in Spring and the different types of ApplicationContext implementations?
  42. Can you explain the difference between ApplicationContext and BeanFactory in Spring?
  43. Can you explain the use of the @Autowired and @Qualifier annotations in Spring for dependency injection?
  44. Can you describe the use of the @Resource annotation in Spring for dependency injection?
  45. Can you explain the use of the @Primary annotation in Spring for dependency injection?
  46. Can you explain the use of the @Profile annotation in Spring for profile-based bean configuration?
  47. Can you explain the use of the @Conditional annotation in Spring for conditional bean configuration?
  48. Can you explain the use of the @Service and @Repository annotations in Spring?
  49. Can you explain the use of the @Controller and @RestController annotations in Spring for web applications?
  50. Can you describe the role of the DispatcherServlet and ContextLoaderListener in a Spring MVC web application?

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