問題詳情

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Which statement is true?
(A) Compilation fails because the hashCode method is not overridden.
(B) A HashSet could contain multiple Person objects with the same name.
(C) All Person objects will have the same hash code because the hashCode method is not overridden.
(D) If a HashSet contains more than one Person object with name="Fred", then removing another Person,also with name="Fred", will remove them all.

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