Spring Framework Quiz (Intermediate) - All Questions

This intermediate Spring Framework quiz focuses on applied concepts, annotations, configuration, and real-world usage scenarios. Perfect for developers who know the basics and want to strengthen their Spring skills for interviews and production-ready applications.

Question 1: What is the main responsibility of ApplicationContext in Spring?

Manage HTTP requests
Manage bean lifecycle and dependencies
Handle database queries
Compile Java code

Explanation: ApplicationContext manages bean creation, configuration, and lifecycle.

Question 2: Which interface is the parent of ApplicationContext?

BeanFactory
ResourceLoader
Environment
ContextLoader

Explanation: ApplicationContext extends the BeanFactory interface.

Question 3: Which annotation is used to load external configuration files?

@PropertySource
@Value
@Configuration
@Import

Explanation: @PropertySource loads properties files into Spring context.

Question 4: What happens if multiple beans of the same type exist and @Autowired is used?

Spring picks one randomly
Compilation fails
Spring throws an exception
All beans are injected

Explanation: Spring throws NoUniqueBeanDefinitionException.

Question 5: Which annotation resolves multiple bean ambiguity?

@Primary
@Qualifier
Both @Primary and @Qualifier
@Component

Explanation: @Primary and @Qualifier both help resolve ambiguity.

Question 6: What is the purpose of @Configuration annotation?

Marks REST controller
Defines configuration class
Handles transactions
Enables scheduling

Explanation: @Configuration indicates a class provides Spring bean definitions.

Question 7: Which annotation is used to declare a bean inside a configuration class?

@Component
@Service
@Bean
@Autowired

Explanation: @Bean defines a bean method inside a configuration class.

Question 8: What is the default lazy behavior of Spring beans?

Lazy-loaded
Eagerly loaded
Loaded on demand
Loaded per request

Explanation: By default, singleton beans are eagerly initialized.

Question 9: Which annotation enables lazy initialization?

@Lazy
@Deferred
@Optional
@Async

Explanation: @Lazy delays bean initialization until needed.

Question 10: What is the use of @Profile annotation?

Enable security
Define environment-specific beans
Handle transactions
Enable logging

Explanation: @Profile activates beans based on environment.

Question 11: Which file activates Spring profiles in Spring Boot?

pom.xml
application.properties
bootstrap.yml
context.xml

Explanation: Profiles are activated via application.properties.

Question 12: Which scope is commonly used in web applications?

singleton
prototype
request
thread

Explanation: Request scope creates one bean per HTTP request.

Question 13: What is the purpose of DispatcherServlet?

Database connection
Central request handling
Bean initialization
Security enforcement

Explanation: DispatcherServlet is the front controller in Spring MVC.

Question 14: Which annotation maps HTTP GET requests?

@RequestMapping
@GetMapping
@PostMapping
@FetchMapping

Explanation: @GetMapping maps HTTP GET requests.

Question 15: Which annotation combines @Controller and @ResponseBody?

@Controller
@RestController
@Service
@Component

Explanation: @RestController simplifies REST API creation.

Question 16: How does Spring handle JSON serialization?

Manually
Using Jackson by default
Using Gson only
Using JAXB

Explanation: Spring Boot uses Jackson for JSON serialization.

Question 17: What does @RequestBody do?

Reads request parameters
Reads HTTP headers
Reads request payload
Writes response body

Explanation: @RequestBody binds request payload to Java object.

Question 18: Which annotation is used for exception handling in a controller?

@ExceptionHandler
@TryCatch
@ErrorHandler
@HandleException

Explanation: @ExceptionHandler handles controller-level exceptions.

Question 19: What is Spring Data JPA mainly used for?

UI rendering
Simplified database access
Security
Logging

Explanation: Spring Data JPA simplifies database operations.

Question 20: Which interface is commonly extended in Spring Data JPA?

JpaRepository
CrudService
EntityManager
RepositoryManager

Explanation: JpaRepository provides CRUD and pagination methods.

Question 21: What is the use of @Entity annotation?

Marks controller
Maps class to database table
Defines service
Creates component

Explanation: @Entity maps a class to a database table.

Question 22: Which annotation marks the primary key in JPA?

@Key
@Primary
@Id
@Column

Explanation: @Id identifies the primary key.

Question 23: What does @GeneratedValue do?

Validates data
Generates primary key values
Maps relationships
Creates indexes

Explanation: @GeneratedValue auto-generates primary keys.

Question 24: Which annotation defines REST endpoint base path?

@BasePath
@RequestMapping
@RestPath
@UrlMapping

Explanation: @RequestMapping defines base URL path.

Question 25: Which HTTP status code represents successful creation?

Explanation: 201 indicates resource creation.

Question 26: What is the purpose of @ResponseEntity?

Return HTTP response with status
Handle requests
Create beans
Inject dependencies

Explanation: @ResponseEntity customizes HTTP response.

Question 27: Which annotation enables transaction management?

@EnableTx
@EnableTransactionManagement
@Transactional
@Transaction

Explanation: @EnableTransactionManagement activates transaction support.

Question 28: What happens if a transactional method throws RuntimeException?

Transaction commits
Transaction rolls back
Ignored
Application crashes

Explanation: RuntimeException triggers transaction rollback.

Question 29: Which annotation enables asynchronous execution?

@Async
@EnableAsync
@Asynchronous
@Threaded

Explanation: @EnableAsync enables async method execution.

Question 30: Which annotation makes a method async?

@Thread
@Async
@Background
@Parallel

Explanation: @Async runs method asynchronously.

Question 31: What is Spring Boot Starter?

Plugin
Dependency descriptor
Server
IDE tool

Explanation: Starters simplify dependency management.

Question 32: Which starter is used for REST APIs?

spring-boot-starter-jpa
spring-boot-starter-web
spring-boot-starter-test
spring-boot-starter-security

Explanation: spring-boot-starter-web is used for REST APIs.

Question 33: Which annotation is used to validate request data?

@Valid
@Check
@Verify
@Validate

Explanation: @Valid triggers validation rules.

Question 34: Which dependency supports validation?

Hibernate Validator
Jackson
Logback
JUnit

Explanation: Hibernate Validator supports Bean Validation.

Question 35: Which annotation maps DELETE requests?

@RemoveMapping
@DeleteMapping
@EraseMapping
@RequestMapping

Explanation: @DeleteMapping handles DELETE requests.

Question 36: What is the purpose of @CrossOrigin?

Enable caching
Enable CORS
Enable security
Enable logging

Explanation: @CrossOrigin allows cross-origin requests.

Question 37: Which annotation injects values from properties file?

@Property
@Config
@Value
@Inject

Explanation: @Value injects property values.

Question 38: Which lifecycle method runs after dependency injection?

init()
destroy()
@PostConstruct
@PreDestroy

Explanation: @PostConstruct runs after bean initialization.

Question 39: Which annotation runs before bean destruction?

@PreDestroy
@Destroy
@End
@Shutdown

Explanation: @PreDestroy runs before bean removal.

Question 40: Which annotation is used to map PUT requests?

@PutMapping
@UpdateMapping
@RequestMapping
@EditMapping

Explanation: @PutMapping handles PUT requests.

Question 41: What is the main use of Spring AOP?

Security only
Logging only
Cross-cutting concerns
UI rendering

Explanation: Spring AOP handles cross-cutting concerns.

Question 42: Which annotation defines an aspect?

@Aspect
@Advice
@Pointcut
@JoinPoint

Explanation: @Aspect marks a class as an aspect.

Question 43: Which advice runs before method execution?

@After
@Around
@Before
@AfterReturning

Explanation: @Before runs before method execution.

Question 44: Which annotation enables scheduling?

@EnableScheduling
@Schedule
@Scheduled
@EnableJobs

Explanation: @EnableScheduling enables scheduled tasks.

Question 45: Which annotation defines a scheduled task?

@Cron
@Schedule
@Scheduled
@Timer

Explanation: @Scheduled defines scheduled execution.

Question 46: What is the purpose of Actuator?

UI rendering
Monitoring and metrics
Security
Database access

Explanation: Spring Actuator provides monitoring endpoints.

Question 47: Which endpoint shows application health?

/metrics
/health
/info
/status

Explanation: /health shows application health status.

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Spring Framework Quiz (Intermediate)

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Spring Framework Quiz (Intermediate)