What mechanisms or approaches have you used to implement dependency inversion in your last project?

To implement dependency inversion in my last project, I used the Dependency Injection pattern. Specifically, I applied constructor injection, where dependencies were passed through the class constructor. This allowed for easy replacement of dependency implementations for testing and improved code modularity.

Example in Java:

public class Service {
    private final Repository repository;

    public Service(Repository repository) {
        this.repository = repository;
    }

    public void perform() {
        repository.save();
    }
}

Here, Service does not create Repository itself but receives it from outside, which is the essence of dependency inversion.