RFR: 8302979: Simplify FileChannelLinesSpliterator.SUPPORTED_CHARSETS and its usage

[Alan Bateman]

On Tue, 21 Feb 2023 11:20:01 GMT, Sergey Tsypanov <stsypanov at openjdk.org> wrote:

> Code of `Files.lines()` could be slightly simplified:
> 
> - use charsets instead of their names
> - use `Set.of()` instead of `HashSet` in `FileChannelLinesSpliterator`

Marked as reviewed by alanb (Reviewer).

This looks okay. If cs is null then it should NPE as before. I've moved the JBS issue to the right subcomponent and adjusted the description to make it clear that this is about Files.lines.

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PR: https://git.openjdk.org/jdk/pull/12688