Language Upgrades · interview question
What is required for a class to implement a sealed interface?
Multiple choiceEasychapter-12-curatedpremiumlanguage-upgradessealed-classes
Answer and explanation
Correct answer
C. It must be listed in the permits clause of the interface.
Why
For a class to implement a sealed interface, it must be listed in the permits clause of the interface, ensuring only authorized implementations can be created, similar to extending a sealed class.
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