多选题

知识点：Java 1/10（多选） Which of the follow...

Question

知识点：Java 1/10（多选）
Which of the following(s) are true when overriding a class’s equals and hashCode method?

A. If two instances of the same class are equal, their hash codes must be equal.

B. If two instances of the same class are NOT equal, their hash codes must NOT be equal.

C. Equals method has a single argument of type Object.

D. No two instances of the same class should have the same hash code.