On Mon, 7 Apr 2025 21:07:36 GMT, Jan Lahoda <jlah...@openjdk.org> wrote:

>> This is a PR that implements JEP: Compact Source Files and Instance Main 
>> Methods. Changes include:
>> - `java.io.IO` moved to `java.lang.IO`, and no longer uses 
>> `System.console()` to implement the methods (thanks to @stuart-marks)
>> - `java. ... .IO` is no longer automatically imported in any compilation unit
>> - the feature is finalized (i.e. no longer requires `--enable-preview`)
>
> Jan Lahoda has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Rewrite bits about charset decoding, removing mention of "internal objects."

src/java.base/share/classes/java/lang/IO.java line 42:

> 40:  * {@code System.in} into characters. The charset used for decoding is 
> specified by the
> 41:  * {@link System#getProperties stdin.encoding} property. If this property 
> is not present,
> 42:  * or if the charset it names cannot be loaded, then UTF-8 is used 
> instead.

stdout.encoding and stdin.encoding are specified (in System.getProperties) to 
lead to unspecified behavior if started with either property set to a value 
other than UTF-8. We should work through the issues of introducing 
stdin.encoding as soon as we can, esp. the redirect cases and whether there is 
use cases for setting any of these properties on the command line.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/24438#discussion_r2035104215

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