RFR: 8350703: Add standard system property stdin.encoding [v3]

[Alan Bateman]

On Wed, 23 Apr 2025 17:12:07 GMT, Stuart Marks <smarks at openjdk.org> wrote:

>> I think the comment could be clearer. As I understand it, it's just trying to saying that the legacy sun.stdout.encoding/sun.stderr.encoding properties for stdout/stderr only, no equivalent for stdin.
>
> Yeah the comment was a bit terse so I tried to clarify it.

Thanks, it looks okay now.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24738#discussion_r2056712967