Core Java · interview question
Why does the hashCode method in Java collections matter in practice?
Multiple choiceEasychapter-4-curatedpremiumcore-javaequals-and-hashcode-in-collections
Answer and explanation
Correct answer
B. To compute an integer representation of an object for efficient storage and retrieval.
Why
The hashCode method provides an integer representation of an object, which is used by hash-based collections like HashMap and HashSet for efficient storage and retrieval. This method helps in organizing objects into buckets, reducing the time complexity of operations like search, insert, and delete.
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