2V0-72.22 Exam Dumps : Professional Develop VMware Spring

Constructor injection is one of the ways to inject dependencies into a bean using its constructor parameters. Since Spring 4.3, if a bean has only one constructor, the @Autowired annotation can be omitted and Spring will use that constructor by default.

Constructor injection is generally recommended over field injection because it makes the dependencies of a bean explicit and immutable. It also facilitates unit testing because it allows us to easily provide mock dependencies through constructor arguments.

A. @Configuration This annotation indicates that the class has @Bean definition methods and may be processed by the Spring container to generate bean definitions and service requests for those beans at runtime. B. @ComponentScan This annotation configures component scanning directives for use with @Configuration classes. Provides support parallel with Spring XML's context:component-scan element.

C. Dependencies between application components can be managed external to the components.

This is true because dependency injection allows the application components to declare their dependencies without creating or obtaining them directly. Instead, the dependencies are provided by an external entity, such as the Spring container, which can read the configuration from XML files, annotations, or Java code1.

D. Configuration can be externalized and centralized in a small set of files.

This is true because dependency injection enables the separation of concerns between the application logic and the configuration. The configuration can be stored in a small number of files that can be easily changed without affecting the source code2.

F. Dependency injection facilitates loose coupling between components.

This is true because dependency injection reduces the direct dependencies between components, making them more reusable and testable. It also allows for easier substitution of different implementations of the same interface3.