Web Reference: Jan 8, 2024 · Learn about the contracts that equals () and hasCode () need to fulfill and the relationship between the two methods Jul 23, 2025 · Java.lang.object has two very important methods defined: public boolean equals (Object obj) and public int hashCode (). In java equals () method is used to compare equality of two Objects. The equality can be compared in two ways: Since different key objects could potentially have the same hash code, the hash code itself is no guarantee that the right key is found. The HashTable then iterates this area (all keys with the same hash code) and uses the key's equals() method to find the right key.
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