On Thu, 4 Nov 2021 16:07:01 GMT, Naoto Sato <na...@openjdk.org> wrote:

> This fix is to require to include `Locale.ROOT` in the returned arrays/set 
> from `getAvailableLocales()` methods in various locale-sensitive classes. The 
> implementation has been including `Locale.ROOT` since its inception, it is 
> simply a doc clarification (+ a test case verifying it). Corresponding CSR 
> has also been drafted: https://bugs.openjdk.java.net/browse/JDK-8276249

The change to the existing source looks good, and the new test looks beautiful. 
Thanks for doing this.

src/java.base/share/classes/java/time/format/DecimalStyle.java line 118:

> 116:      * Lists all the locales that are supported.
> 117:      * <p>
> 118:      * At a minimum, the returned Set must contain a {@code Locale} 
> instance equal to

A nit, really. Consider applying either of these suggestions:
Suggestion:

     * At a minimum, the returned {@code Set} must contain a {@code Locale} 
instance equal to

Suggestion:

     * At a minimum, the returned set must contain a {@code Locale} instance 
equal to

-------------

Marked as reviewed by prappo (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6258

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