A、 The hashCode method for a given class can be used to test for object equality and object inequality for that class.

B、 The hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.

C、 The hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.

D、 The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.

E、 The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.