<i18n dev> RFR: 8366178: Implement JEP 526: Lazy Constants (Second Preview)

[Burning_TNT]

On Thu, 2 Oct 2025 10:51:08 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> Implement JEP 526: Lazy Constants (Second Preview)
> 
> The lazy list/map implementations are broken out from `ImmutableCollections` to a separate class.
> 
> The old benchmarks are not moved/renamed to allow comparison with previous releases.
> 
> `java.util.Optional` is updated so that its field is annotated with `@Stable`.  This is to allow `Optional` instances to be held in lazy constants and still provide constant folding.

It's essential to provide a low-level API as those in StableValue. Completely migrating to factory pattern may forcing users to build their own LazyConstant wrapper as ExeBoss has down above.

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PR Comment: https://git.openjdk.org/jdk/pull/27605#issuecomment-3369054838