Core Java · interview question
When are two objects considered equal in a Java Set?
Multiple choiceEasychapter-4-curatedpremiumcore-javaequals-and-hashcode-in-collections
Answer and explanation
Correct answer
B. When their hashCodes are equal and they are equal according to equals.
Why
In a Set, two objects are considered equal if they have the same hashCode and are equal according to the equals method. This ensures the unique constraint of a Set.
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