Language Upgrades · interview question
In Java, which statement is true about the use of the 'sealed' keyword?
Multiple choiceEasychapter-12-curatedpremiumlanguage-upgradespattern-matching
Answer and explanation
Correct answer
A. It restricts which classes can extend or implement a class or interface.
Why
The 'sealed' keyword in Java is used to restrict which classes can extend or implement a given class or interface, providing better control over the class hierarchy and enabling exhaustiveness checks in switch statements.
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