Core Java · interview question
Given a class hierarchy where 'OnlineService' is a superclass and 'SubscriptionService' is a subclass, which method signature in 'SubscriptionService' would correctly override a method in 'OnlineService'?
Multiple choiceMediumchapter-5-curatedpremiumcore-javacode-reading-with-related-types
Answer and explanation
Correct answer
A. Public String getServiceInfo();
Why
To override a method, the subclass method must have the same signature and return type as the method in the superclass. Option 'a' correctly matches this requirement.
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