On Thu, 1 Jul 2021 12:19:53 GMT, Сергей Цыпанов <github.com+10835776+stsypa...@openjdk.org> wrote:
>> In some JDK classes there's still the following hashCode() implementation: >> >> long objNum; >> >> public int hashCode() { >> return (int) objNum; >> } >> >> This outdated expression should be replaced with Long.hashCode(long) as it >> >> - uses all bits of the original value, does not discard any information >> upfront. For example, depending on how you are generating the IDs, the upper >> bits could change more frequently (or the opposite). >> >> - does not introduce any bias towards values with more ones (zeros), as it >> would be the case if the two halves were combined with an OR (AND) operation. >> >> See https://stackoverflow.com/a/4045083 >> >> This is related to https://github.com/openjdk/jdk/pull/4309 > > Сергей Цыпанов has updated the pull request incrementally with one additional > commit since the last revision: > > 8268764: Update copy-right year Marked as reviewed by kizune (Reviewer). ------------- PR: https://git.openjdk.java.net/jdk/pull/4491