Which of the following statements about hash functions is NOT correct?
A)Using a prime number as a hash multiplier will produce better hash codes.
B)If you supply your own hashCode method for a class, it must be compatible with that class's equals method.
C)A good hash function will minimize the number of objects that are assigned the same hash code.
D)A hash function produces a unique integer-valued hash code value for each distinct object.

Question

Quizplus · Accepted Answer

Option D is not correct because a hash function does not always produce unique hash codes. In fact, hash collisions (when two or more objects produce the same hash code) are common and a good hash function should aim to minimize them. Options A, B, and C are correct statements about hash functions.

Which of the Following Statements About Hash Functions Is NOT