RFR: 8344706: Compiler Implementation of Compact Source Files and Instance Main Methods [v4]

[Alan Bateman]

On Thu, 10 Apr 2025 01:03:01 GMT, Jan Lahoda <jlahoda at 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:
> 
>   Add clause about handling of malformed/unmappable bytes.

src/java.base/share/classes/java/lang/IO.java line 41:

> 39:  * The {@link #readln()} and {@link #readln(String)} methods decode bytes read from
> 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,

@stuart-marks Are you planning to propose/integrate pull/24738 in advance of the JEP update? Asking because this paragraph will need to be adjusted if pull/24738 doesn't go in first.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24438#discussion_r2053585828