<i18n dev> RFR: 8366178: Implement JEP 526: Lazy Constants (Second Preview) [v16]

[Maurizio Cimadamore]

On Fri, 17 Oct 2025 13:13:45 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.
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update docs after comments

src/java.base/share/classes/java/lang/LazyConstant.java line 154:

> 152:  *
> 153:  * <h2 id="performance">Performance</h2>
> 154:  * The contents of lazy constant can never change after it has been initialized. Therefore,

Suggestion:

 * The contents of a lazy constant can never change after it has been initialized. Therefore,

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PR Review Comment: https://git.openjdk.org/jdk/pull/27605#discussion_r2440185045