RFR: 8334015: Add Support for UUID Version 7 (UUIDv7) defined in RFC 9562 [v23]

[Jaikiran Pai]

On Sun, 9 Nov 2025 18:23:01 GMT, ExE Boss <duke at openjdk.org> wrote:

>> Kieran Farrell has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   update api note
>
> test/jdk/java/util/UUID/UUIDTest.java line 154:
> 
>> 152:         long timestamp = System.currentTimeMillis();
>> 153:         try {
>> 154:             UUID u = UUID.ofEpochMillis(timestamp);
> 
> Note that this test will start failing in 20889 [HE].
> 
> [HE]: https://en.wikipedia.org/wiki/Holocene_calendar

Hello @ExE-Boss, what would be the failure in that case? I had a very brief looked at the linked page and I couldn't relate how that impacts the timestamp based on `UUID.ofEpocMillis(...)`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25303#discussion_r2509187188