Object-oriented programming · interview question
What can cause a ClassCastException in a polymorphic Java application?
Multiple choiceHardchapter-5-curatedpremiumooppolymorphism
Answer and explanation
Correct answer
A. Attempting to cast an object to a subclass that it is not an instance of
Why
A ClassCastException occurs when you try to cast an object to a subclass that it is not an instance of. This is a common pitfall in polymorphic applications where runtime type checking can fail if casting is not done carefully.
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