Here you will find 30 MCQs on Assert Method and Annotations in Java.
MCQs on Assert Method and Annotations
1. What is the purpose of the assert statement in Java?
a. To handle exceptions
b. To define custom annotations
c. To check assumptions about the program
d. To declare method contracts
2. Which keyword is used to enable or disable assertions in Java?
a. assert
b. enable
c. disable
d. verify
3. By default, are assertions in Java enabled or disabled?
a. Enabled
b. Disabled
4. Which of the following statements is true about assertions?
a. They are a replacement for exceptions.
b. They are used for debugging and testing.
c. They are mandatory in all Java programs.
d. They are only used in production code.
5. What happens if an assertion condition is evaluated to false?
a. An AssertionError is thrown.
b. The program continues without any action.
c. The program terminates.
d. The assertion is automatically corrected.
6. In Java, which keyword is used to define a custom annotation?
a. define
b. annotation
c. @interface
d. custom
7. What is the primary purpose of annotations in Java?
a. To improve code readability
b. To control program flow
c. To specify metadata about program elements
d. To replace traditional comments
8. Which annotation is used to indicate that a method is intended to override a method in a superclass?
a. @Override
b. @Inherited
c. @OverrideMethod
d. @Overwrite
9. What is the use of the @Deprecated annotation in Java?
a. It indicates that a method is not implemented yet.
b. It marks a method or class as obsolete or deprecated.
c. It specifies a method’s access level.
d. It defines a method’s signature.
10. Which annotation is used to suppress warnings in Java?
a. @SuppressWarnings
b. @Override
c. @Deprecated
d. @SafeVarargs
11. What does the @Inherited annotation do in Java?
a. It indicates that a method should be inherited by subclasses.
b. It marks a method as final and not subject to inheritance.
c. It specifies that an annotation should be inherited by subclasses.
d. It prevents subclassing.
12. Which annotation is used to specify the order in which JUnit test methods should be executed?
a. @TestOrder
b. @TestMethodOrder
c. @TestSequence
d. @TestPriority
13. In JUnit, which annotation is used to mark a method as a test case?
a. @TestCase
b. @TestMethod
c. @Test
d. @TestUnit
14. Which annotation is used to configure Spring beans in an XML configuration file?
a. @Bean
b. @Autowired
c. @Component
d. @Configuration
15. What does the @Transactional annotation do in Spring?
a. It specifies the transaction isolation level.
b. It marks a class as a Spring component.
c. It indicates that a method should be executed within a transaction.
d. It defines a method’s transaction propagation behavior.
16. Which annotation is used to define the request mapping for a controller method in Spring MVC?
a. @RequestMapping
b. @GetMapping
c. @PostMapping
d. @ControllerMapping
17. What is the purpose of the @SuppressWarnings annotation in Java?
a. To suppress compiler warnings
b. To indicate a deprecated method
c. To disable assertions
d. To define custom exceptions
18. Which annotation is used to specify the scope of a Spring bean?
a. @Scope
b. @BeanScope
c. @Singleton
d. @Prototype
19. In Java, which annotation is used to indicate that a field should be serialized to JSON?
a. @JsonSerialize
b. @SerializeField
c. @JsonProperty
d. @Serializable
20. Which annotation is used to define a method as a callback method in the Java Persistence API (JPA)?
a. @Callback
b. @PersistenceMethod
c. @EntityCallback
d. @LifecycleCallback
21. What is the purpose of the @SafeVarargs annotation in Java?
a. To indicate that a method is thread-safe
b. To suppress unchecked warnings in varargs methods
c. To mark a method as a varargs method
d. To ensure that a method is type-safe
22. Which annotation is used to specify the default retention policy for a custom annotation in Java?
a. @Retention
b. @RetentionPolicy
c. @Inherited
d. @Documented
23. In Java, which annotation is used to mark a class as a Spring component?
a. @Component
b. @Service
c. @Controller
d. @Bean
24. What is the purpose of the @Documented annotation in Java?
a. It indicates that a class should be documented in Javadoc.
b. It specifies that an annotation should be documented in Javadoc.
c. It marks a class as a document generator.
d. It is used to create documentation for a class.
25. Which annotation is used to specify the order in which advice should be applied in Aspect-Oriented Programming (AOP) in Spring?
a. @BeforeAdvice
b. @AfterAdvice
c. @AroundAdvice
d. @Order
26. What is the purpose of the @PostConstruct annotation in Spring?
a. It marks a method as a lifecycle callback.
b. It specifies the initialization order of beans.
c. It defines a custom scope for a bean.
d. It indicates that a method should be executed after a transaction.
27. In JUnit, which annotation is used to specify that a method should be executed before each test case?
a. @BeforeEach
b. @BeforeTest
c. @BeforeTestCase
d. @BeforeMethod
28. Which annotation is used to define a custom constraint in Java Bean Validation (JSR-303)?
a. @CustomConstraint
b. @ValidationConstraint
c. @Constraint
d. @BeanValidation
29. What is the purpose of the @WebServlet annotation in Java Servlets?
a. It marks a class as a servlet.
b. It specifies the servlet’s request URL pattern.
c. It defines the servlet’s HTTP methods.
d. It is used to create custom filters.
30. In Java, which annotation is used to indicate that a class should be treated as an entity in JPA?
a. @Entity
b. @Table
c. @PersistenceEntity
d. @DataEntity
Answers
- c
- a
- b
- b
- a
- c
- c
- a
- b
- a
- c
- b
- c
- a
- c
- a
- a
- a
- c
- d
- b
- a
- a
- b
- d
- a
- a
- c
- b
- a
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