Returning polymorphic types in methods preserves type safety and simplifies client code. Methods returning Object or Any result in excessive type checking and confusion. This leads to missed polymorphism, increased tight coupling, and fragile implementations that are hard to test. Instead, using specific types or interfaces clarifies intent and upholds contracts. Implementing the Null Object Pattern and handling exceptions enhances maintainability by reducing clutter, which ultimately results in clearer, less error-prone code.
Returning object types like Object or Any in methods causes tight coupling and excessive null checks, leading to fragile code that’s hard to test.
Polymorphism simplifies code by allowing objects that share an interface to be treated interchangeably. Returning null complicates caller's code.
The loss of type safety occurs when returning objects without clearly defined types. This leads to unclear contracts and increased testing difficulties.
Methods should return specific types or interfaces to communicate intent and ensure compile-time correctness, avoiding confusion and runtime errors.
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