RFR: 8305457: Implement java.io.IO [v3]

[Stuart Marks]

On Tue, 7 May 2024 19:46:18 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

>> Please review this PR which introduces the `java.io.IO` top-level class and three methods to `java.io.Console` for [Implicitly Declared Classes and Instance Main Methods (Third Preview)].
>> 
>> This PR has been obtained as `git merge --squash` of a now obsolete [draft PR].
>> 
>> [Implicitly Declared Classes and Instance Main Methods (Third Preview)]: https://bugs.openjdk.org/browse/JDK-8323335
>> [draft PR]: https://github.com/openjdk/jdk/pull/18921
>
> Pavel Rappo has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Strengthen tests after 8330998
>   
>   https://github.com/openjdk/jdk/pull/18996 now allows us to test
>   Console IO better.

src/java.base/share/classes/java/io/IO.java line 37:

> 35:  * is {@code null}; otherwise, the effect is as if a similarly-named method
> 36:  * had been called on that console.
> 37:  *

Add a note here on encoding (character set), something like


Output from methods in this class uses the character set of the system console as specified by {@link Console#charset}.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19112#discussion_r1593109243