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Spring Boot Interview Questions and Answers

  Difficulty Level: AllBeginnerIntermediateExperienced/Expert

Ques 1. What is Spring Boot?

Ques 2. Why to use Spring Boot?

Ques 3. Mention some advantages of Spring Boot.

Ques 4. How to create a Spring Boot application using Spring Initializer?

Ques 5. What are the ways to create Spring Boot project?

Ques 6. What are the advantages of microservice?

Ques 7. Explain different types of dependency injection.

Ques 8. What are the commands to run and stop Spring Boot executable jar file?

Ques 9. How can you change JDK version in Spring Boot?

Ques 10. What is the process that you need to follow to run Spring Boot application on the custom port?

Ques 11. What is Spring Boot starter? How is it useful?

Ques 12. Can you use Spring Boot with applications which are not using Spring?

Ques 13. What is the name of the configuration file which you can use in Spring Boot?

Ques 14. What is DevTools in Spring Boot?

Ques 15. What are the essential components of Spring Boot?

Ques 16. How are properties defined in Spring Boot and where?

Ques 17. What is spring-boot-starter-parent?

Ques 18. How to enable HTTP/2 supports in Spring Boot?

Ques 19. What is a Spring Boot Actuator?

Ques 20. How can you access a value defined in the application? What is properties file in Spring Boot?

Ques 21. What is the primary difference between Spring and Spring Boot?

Ques 22. Explain Spring Boot Admin.

Ques 23. How can you connect Spring Boot to the database using JPA?

Ques 24. Explain @RestController annotation in Spring Boot?

Ques 25. Explain Spring CLI.

Ques 26. Where can you define properties in Spring Boot application?

Ques 27. What are embedded containers support by Spring?

Ques 28. Explain thymeleaf in Spring Boot.

Ques 29. What are the Spring Boot properties?

Ques 30. What is the main difference between JPA and Hibernate?

Ques 31. What is a shutdown in the actuator?

Ques 32. Is it possible to replace or override the Embedded Tomcat server in Spring Boot?

Ques 33. Can you disable the default web server in the Spring Boot application?

Ques 34. How do you Add, Filter to an application?

Ques 35. What are Spring Boot Starter Projects?

Ques 36. What is @pathVariable?

Ques 37. What is the use of profiles in Spring Boot?

Ques 38. What is LiveReload in Spring Boot?

Ques 39. What are the major benefits of spring Externalized Configuration?

Ques 40. What do you mean by hot-swapping in Spring Boot?

Ques 41. Explain Auto-Configuration in Spring Boot.

Ques 42. How to enable logging in Spring Boot?

Ques 43. Explain overriding default properties in Spring Boot application.

Ques 44. How to handle exception in Spring Boot.

Ques 45. What is mean by spring batch?

Ques 46. Explain CORS in Spring Boot?

Ques 47. What is the default package in Spring Boot?

Ques 48. How can you set active profile in Spring Boot?

Ques 49. List out some of the Spring Boot Starters.

Ques 50. How to scan all the beans and package declarations in Spring Boot?

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