Language Upgrades · interview question
Why do teams use sealed classes in Java in production code?
Multiple choiceEasychapter-12-curatedpremiumlanguage-upgradessealed-classes
Answer and explanation
Correct answer
D. Restricting the class hierarchy to improve security.
Why
Sealed classes allow you to restrict which classes can extend or implement them. This control helps maintain a fixed class hierarchy, preventing unauthorized or rogue subclassing.
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