Millist sõltuvuste süstimise lähenemist kasutatakse Spring Frameworkis?

In the Spring Framework, dependency injection is used through Inversion of Control (IoC) with the help of the Spring container.

The main methods of dependency injection are:

• Through the constructor — dependencies are passed via constructor parameters.
• Through setters — dependencies are set via setter methods.
• Through field injection — dependencies are injected directly into fields using annotations.

Spring manages the lifecycle of objects and their dependencies, creating and linking beans in the container. Annotations like @Autowired are used for automatic wiring.

Example of constructor injection:

@Component
public class Service {
    private final Repository repo;

    @Autowired
    public Service(Repository repo) {
        this.repo = repo;
    }
}

This way, Spring implements dependency injection via the IoC container, simplifying dependency management and increasing code testability.