Java: Inversion of Control (IoC)

Constructor injection is preferred because it ensures immutability and makes dependencies explicit.

Constructor injection is favored because it allows you to define all required dependencies at the time of object creation, ensuring that the object is fully initialized. This method promotes immutability and makes the class easier to test. For example, in an order processing service, using constructor injection guarantees that all dependencies like `PaymentService` and `InventoryService` are present and cannot be changed after creation.