Collections · interview question
You have a HashSet storing custom Product objects. Why might duplicate Products be inadvertently added?
Multiple choiceMediumchapter-4-curatedpremiumcollectionsset-interface-and-hashset
Answer and explanation
Correct answer
B. Because the equals() and hashCode() methods are not overridden
Why
For a HashSet to correctly enforce uniqueness of custom objects, the equals() and hashCode() methods must be correctly overridden in the Product class to ensure proper comparison.
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