Question

What happens if we don't override equals and hashcode

Answer 1

$\huge\mathbb\green{BONJOUR,}$

$\huge\mathfrak{Answer:}$

You must override hashCode in every class that overrides equals. Failure to do so will result in a violation of the general contract for Object.hashCode, which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.

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