What difficulties may arise if dependency injection with Dagger is not implemented?

The absence of dependency injection using Dagger can lead to several problems:

• Tight coupling of components: classes directly create dependencies, making them difficult to replace or test.
• Testing complexity: without DI, it is difficult to substitute dependencies with mocks, complicating unit testing.
• Code duplication: manually creating and configuring objects leads to repetition.
• Lifecycle management: without Dagger, it is harder to control the lifespan of objects and their scopes.

Using Dagger automates the creation and provision of dependencies, improving modularity and maintainability of the code.