RFR: 8334015: Add Support for UUID Version 7 (UUIDv7) defined in RFC 9562 [v16]

[Alan Bateman]

On Tue, 30 Sep 2025 05:21:08 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Kieran Farrell has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   missing semicolon
>
> src/java.base/share/classes/java/util/UUID.java line 70:
> 
>> 68:  *
>> 69:  * <p> For more information including algorithms used to create {@code UUID}s,
>> 70:  * see <a href="http://www.ietf.org/rfc/rfc4122.txt"> <i>RFC 4122: A
> 
> RFC-4122 https://www.rfc-editor.org/rfc/rfc4122 has been obsoleted by RFC-9562. A few lines below, we now have a `@spec` pointing to RFC-9562. Should we just remove this entire paragraph?

Right, and also confusing to reference both the old and new RFC. It may be time to revisit the first paragraph of the class description so that it references RFC 9562 before it presents the versions.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25303#discussion_r2391525565