RFR: 8359732: Make standard i/o encoding related system properties `StaticProperty`

[Alan Bateman]

On Tue, 17 Jun 2025 20:16:05 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Refactored the internal handling of `stdin/out/err.encoding` to allow setting them only via command-line options by converting them into `StaticProperty`. This change prevents unexpected behavior caused by applications modifying these properties at runtime using `System.setProperty()`.

src/java.scripting/share/classes/javax/script/SimpleScriptContext.java line 100:

> 98: 
> 99:     private static InputStreamReader stdinReader() {
> 100:         Charset charset = Charset.forName(StaticProperty.stdinEncoding(), Charset.defaultCharset());

This is the jrunscript command line tool. I suppose it's possible it could run a script that changes stdin.encoding.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25860#discussion_r2153921907