Free Test Dependency Injection – JAVA

Q1: What is Dependency Injection in Java EE?

A. A way to write SQL queries B. Injecting services manually C. Automatically providing dependencies D. Using Java Reflection

Q2: Which annotation is used for field injection in Java EE?

A. @Autowired B. @Inject C. @EJB D. @Resource

Q3: Which package provides @Inject annotation?

A. javax.persistence B. javax.inject C. javax.enterprise.context D. javax.annotation

Q4: What is the main advantage of Dependency Injection?

A. Better performance B. Hard coding dependencies C. Loose coupling D. Tight integration

Q5: Which Java EE component supports injection using @EJB?

A. Servlet B. Entity C. Session Bean D. Controller

Q6: Which annotation is used to inject environment resources like DataSource?

A. @Inject B. @PersistenceContext C. @Resource D. @Context

Q7: What does CDI stand for in Java EE?

A. Component Dependency Injection B. Context and Dependency Injection C. Class Dependency Injection D. Controller Dependency Injection

Q8: What is required for a class to be eligible for injection in CDI?

A. It must be abstract B. It must be final C. It must be a managed bean D. It must be a static class

Q9: Which scope annotation is used to declare a bean for a single HTTP request?

A. @ApplicationScoped B. @SessionScoped C. @RequestScoped D. @Dependent

Q10: Which annotation provides the default scope in CDI?

A. @SessionScoped B. @ApplicationScoped C. @Dependent D. @RequestScoped

Q11: Which interface is used to manually perform dependency injection?

A. Injector B. BeanManager C. ContextFactory D. ApplicationContext

Q12: What does @Named annotation do in CDI?

A. Marks a bean with a custom name B. Injects named parameters C. Registers filter D. Defines method alias

Q13: What is the use of @Produces annotation in CDI?

A. Creates getter method B. Declares injectable objects C. Logs a bean D. Defines class loader

Q14: Which scope should be used for application-wide beans?

A. @RequestScoped B. @SessionScoped C. @ApplicationScoped D. @Dependent

Q15: Which method allows setting a bean post-construction?

A. @PreInit B. @PostConstruct C. @AfterCreate D. @Constructed

Q16: Which file activates CDI in Java EE web apps?

A. beans.xml B. web.xml C. context.xml D. config.xml

Q17: Which annotation is used to inject persistence context?

A. @Inject B. @Resource C. @PersistenceUnit D. @PersistenceContext

Q18: Which scope provides a new bean instance for every injection point?