Core Java · interview question
Why is it useful to upcasting in Java?
Multiple choiceEasychapter-5-curatedpremiumcore-javaupcasting-and-dynamic-dispatch
Answer and explanation
Correct answer
D. To allow a subclass reference to be treated as a superclass reference.
Why
Upcasting allows a subclass reference to be treated as a superclass reference, providing flexibility and enabling polymorphism. This allows you to write more general code by referring to objects through their superclass type.
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