RFR: 8301971: Make JDK source code UTF-8 [v3]

[Magnus Ihse Bursie]

On Wed, 16 Apr 2025 16:14:39 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> We will probably need to make sure things are ok on Windows as well (they are the other confusing environment)

Windows is much more painful to work with, since there is no correspondence of `LC_ALL`; you must set the user's locale. There is a rather long paragraph detailing the requirements for building without problems in the build README.

Is there some specific problem you are worried about on Windows that you were thinking about?

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PR Comment: https://git.openjdk.org/jdk/pull/24574#issuecomment-2813033188