Object-oriented programming · interview question
Consider the following code snippet. Why does this inheritance hierarchy violate good design practices?
Multiple choiceHardchapter-5-curatedpremiumoopinheritance-basics
class Vehicle {} class Bicycle extends Vehicle {}Answer and explanation
Correct answer
C. The subclass should not extend a class it is not truly a type of.
Why
The code snippet violates the 'is-a' relationship because the subclass is extending a class it is not truly a subtype of. This forces an inappropriate inheritance that can lead to maintenance issues.
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