Collections · interview question
How does a HashSet ensure all elements are unique when storing objects?
Multiple choiceHardchapter-4-curatedpremiumcollectionsset-interface-and-hashset
Answer and explanation
Correct answer
A. By using the hashCode() and equals() methods
Why
HashSet uses the hashCode() and equals() methods to ensure uniqueness. The hashCode() determines the bucket, and equals() checks for equality within the bucket.
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