Language Upgrades · interview question
When declaring a sealed class, which keyword is used to specify its subclasses?
Multiple choiceMediumchapter-12-curatedpremiumlanguage-upgradessealed-classes
Answer and explanation
Correct answer
C. Permits
Why
The 'permits' keyword is used in a sealed class declaration to specify which classes are allowed to extend it. This ensures the sealed class can only be extended by a predefined set of classes.
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