RFR: 8305457: Implement java.io.IO [v4]

[Jaikiran Pai]

On Wed, 8 May 2024 18:43:41 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 two additional commits since the last revision:
> 
>  - Specify charset of java.io.IO
>  - Use system-dependent line separator for Console.println

src/java.base/share/classes/java/io/IO.java line 38:

> 36:  * had been called on that console.
> 37:  *
> 38:  * <p> Output from methods in this class uses the character set of the system

Hello Pavel, given that `java.io.IO` exposes both input and output methods and the Charset will be used by both input and output, I think we might have to reword this sentence to make a note of input too.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19112#discussion_r1596380347