equals and hashcode contracts | Learn with Mr. Kiran Jadhav
equals and hashcode contracts -
How equals() & hashCode() Work Together-
equals() is used to compare two objects for equality.
hashCode() is used in collections like HashMap or HashSet to efficiently group and access objects.
If you override equals(), you must override hashCode() as well to ensure that equal objects have the same hash code, otherwise it could lead to unexpected behavior in collections that rely on hashing.
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