Core Java · interview question
Why does upcasting an object to a superclass type change runtime behavior?
Multiple choiceEasychapter-5-curatedpremiumcore-javaupcasting-and-dynamic-dispatch
Answer and explanation
Correct answer
C. The object can only access methods available in the superclass.
Why
When an object is upcast to a superclass type, it can only access the methods that are defined in the superclass. However, the runtime type of the object does not change, preserving its subclass-specific behavior.
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