On Sat, 5 Sep 2026 10:06:30 GMT, Tagir F. Valeev <[email protected]> wrote:
> Three options were suggested about the new API: > - ListFormat.formatting() > - ListFormat.toCollector() > - Collectors.listFormatting(ListFormat) static method > I feel it should belong to ListFormat, but I'm open to discussions. > > For testing, I tested a couple of scenarios and a few corner cases (empty > stream, null element, parallel stream) in a simple non-parameterized JUnit > test. I believe that it's enough, given that the implementation is trivial, > and ListFormat itself, as well as Stream API is already thoroughly tested by > other tests. Tell me if you feel that some testing scenarios are missing, > I'll happily add them. > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Thanks for the PR, Tagir. I think of this functionality as "localized joining", so I would have had `Collectors.joining(listFormat)` but that is not possible I suppose, because it would conflict with the overload that takes `CharSequence`. Maybe `Collectors.joiningLocalized(listFormat)` static method? This would highly help discoverability of the functionality as @viktorklang-ora mentioned. ------------- PR Comment: https://git.openjdk.org/jdk/pull/32716#issuecomment-5592368919
