Core Java · interview question
Which method should be overridden to ensure correct behavior of keys in a HashMap?
Multiple choiceMediumchapter-4-curatedpremiumcore-javaequals-and-hashcode-in-collections
Answer and explanation
Correct answer
D. Both equals and hashCode
Why
In HashMap, keys are stored and retrieved based on their hashCode, and equality is checked using equals. Both methods must be overridden to maintain the map’s integrity.
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