Object-oriented programming · interview question
How does using interfaces in Java improve testability of code?
Multiple choiceMediumchapter-5-curatedpremiumoopinterfaces
Answer and explanation
Correct answer
A. Interfaces allow for easier change of implementation without affecting the test code.
Why
Interfaces improve testability by allowing different implementations to be swapped out easily, enabling tests to focus on the interface contract rather than specific implementations.
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