My current project involves creating multiple interfaces, and I would like to keep them separate for clarity. Would it be wise to do this in a service or a class? Additionally, is it possible to utilize dependency injection for classes?
Thank you for your assistance!
When designing a system, interfaces play a crucial role in defining contracts for methods and their respective properties. These contracts allow for multiple implementations that encapsulate logic and abstract business rules from the caller. By using dependency injection, coupling is reduced as it follows the broader technique of inversion of control. Clients utilizing services should not need to know how they are constructed; instead, they delegate this responsibility to external code (the injector). In Java, interfaces serve as a key component in achieving this abstraction.
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