问题：

[多选] Which two statements are true about the hashCode method？（）

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 the elements within that set.
C . The hashCode method for a given class can be used to test for object inequality， but NOT objecte quality， 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.