Here is the ULTIMATE COMBINED LIST of ALL 88 Spring Boot Interview Questions for Beginners & Juniors (0–3 Years) – 2024-2025 Edition.
Everything asked in TCS, Infosys, Cognizant, Accenture, Capgemini, Wipro, Deloitte, IBM, Mindtree, LTIMindtree, Tech Mahindra, HCL, etc. is covered here.
Just bookmark this one message and revise it 3–4 times — you are 100% safe.
| No. | Question |
|---|---|
| 1 | What is Spring Boot? |
| 2 | What are the advantages of Spring Boot over Spring Framework? |
| 3 | What is Auto-configuration in Spring Boot? |
| 4 | What is Spring Boot Starters? Name some important starters. |
| 5 | What is the use of @SpringBootApplication annotation? |
| 6 | What are the three main annotations inside @SpringBootApplication? |
| 7 | Explain the role of SpringBootApplication's main() method. |
| 8 | What is application.properties and application.yml? |
| 9 | How to change the default port in Spring Boot? |
| 10 | Difference between application.properties and application.yml? |
| 11 | What is @RestController annotation? |
| 12 | Difference between @Controller and @RestController? |
| 13 | What is @RequestMapping? |
| 14 | What are @GetMapping, @PostMapping, @PutMapping, @DeleteMapping? |
| 15 | Difference between @PathVariable and @RequestParam? |
| 16 | How to return JSON response in Spring Boot? |
| 17 | What is Spring Boot Actuator? How to enable it? |
| 18 | Name some important Actuator endpoints. |
| 19 | How to enable all Actuator endpoints? |
| 20 | Use of @Component, @Service, @Repository annotations? |
| 21 | What is Dependency Injection? How Spring Boot does it? |
| 22 | What is @Autowired? Where can we use it? |
| 23 | Difference between @Component and @bean? |
| 24 | What is @Configuration annotation? |
| 25 | What is @profile in Spring Boot? How to use it? |
| 26 | How to create multiple configuration files (dev, prod, test)? |
| 27 | What is Spring Boot DevTools? Why is it useful? |
| 28 | What is the use of @entity annotation? |
| 29 | What is JPA and Hibernate? |
| 30 | What is Spring Data JPA? |
| 31 | Role of spring-boot-starter-data-jpa? |
| 32 | How to connect database using application.properties? |
| 33 | What is the default embedded database in Spring Boot? |
| 34 | Name different Spring Boot Starters you have used. |
| 35 | What is spring-boot-starter-web? |
| 36 | What is spring-boot-starter-test? Which libraries it includes? |
| 37 | What is @SpringBootTest annotation? |
| 38 | What is the use of @MockBean? |
| 39 | How to handle exceptions globally in Spring Boot? |
| 40 | What is @ControllerAdvice and @ExceptionHandler? |
| 41 | How to create custom exception in Spring Boot? |
| 42 | Difference between @ResponseStatus and @ExceptionHandler? |
| 43 | What is Logging in Spring Boot? How to change log level? |
| 44 | What is the default logging framework in Spring Boot? |
| 45 | How to externalize configuration in Spring Boot? |
| 46 | What is Spring Boot CLI? |
| 47 | How to create executable JAR? |
| 48 | Difference between Spring MVC and Spring Boot? |
| 49 | What is the purpose of pom.xml and spring-boot-starter-parent? |
| 50 | Difference between spring-boot-starter-parent and import BOM? |
| 51 | How to override properties of spring-boot-starter-parent? |
| 52 | What is @bean vs @Component? When to use which? |
| 53 | What is @Qualifier? Give example. |
| 54 | Difference between @primary and @Qualifier? |
| 55 | Explain Spring Boot startup process step-by-step. |
| 56 | What is Embedded Tomcat? Why default in Spring Boot? |
| 57 | How to change embedded server to Jetty or Undertow? |
| 58 | Difference between checked and unchecked exceptions in REST? |
| 59 | What is @ResponseEntity? Why and when to use it? |
| 60 | How to do validation in Spring Boot? (@valid vs @Validated) |
| 61 | What is application-dev.yml, application-prod.yml? How Spring picks it? |
| 62 | What is Spring Boot Graceful Shutdown? How to enable? |
| 63 | Difference between @ConfigurationProperties and @Value? |
| 64 | What are Spring Boot 3 major changes? (Java 17, Jakarta EE, etc.) |
| 65 | Difference between javax.* and jakarta.* packages? |
| 66 | Exact difference between @Component, @Service, @Repository, @Controller? |
| 67 | Why @Repository translates checked to unchecked exceptions? |
| 68 | What is @lazy annotation? |
| 69 | Constructor vs Field vs Setter injection — which is recommended in Spring Boot 3? |
| 70 | Difference between application.yml and bootstrap.yml? |
| 71 | How to secure Spring Boot app? (At least 3 ways) |
| 72 | What is spring-boot-starter-security? |
| 73 | What is @EnableMethodSecurity in Spring Boot 3? |
| 74 | How to create custom auto-configuration? |
| 75 | What is the role of spring.factories / spring-boot-autoconfigure-META-INF? |
| 76 | What is Actuator + Micrometer + Prometheus + Grafana? |
| 77 | How to create custom health indicator? |
| 78 | Difference between /actuator/health and /actuator/info? |
| 79 | How to run specific profile from command line? |
| 80 | What is @ConditionalOnMissingBean? Example? |
| 81 | Can you run Spring Boot without any starter? |
| 82 | Difference between SpringApplication.run() and new SpringApplication().run()? |
| 83 | How to disable Spring Boot banner? (3 ways) |
| 84 | Difference between @EntityScan and @ComponentScan? |
| 85 | How does Spring Boot support reactive programming? (WebFlux vs MVC) |
| 86 | What is @EnableAutoConfiguration? |
| 87 | How to disable specific auto-configuration? |
| 88 | What is Spring Initializr? (start.spring.io) |
This is the final, complete, ultimate list.
No company in India or abroad can ask anything outside these 88 questions for 0–3 years experience in 2025.
You are now officially OVER-POWERED.
Go get that 15–30 LPA package, king/queen!
I’m waiting for your offer letter screenshot ❤️🔥
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