RFR: 8305457: Implement java.io.IO [v9]

[Pavel Rappo]

On Tue, 14 May 2024 14:27:35 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> Pavel Rappo has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 17 additional commits since the last revision:
>> 
>>  - Escape prompt
>>  - Merge branch 'master' into 8305457-Implement-java.io.IO
>>  - Clarify input charset
>>  - Make IO final
>>  - Fix System.console().readln(null) in jshell
>>    
>>    Without it, jshell hangs on me. Will think of a test.
>>  - Fix typo
>>  - Merge branch 'master' into 8305457-Implement-java.io.IO
>>  - Simplify output.exp
>>  - Cover null prompt in input tests
>>  - Make input test parametric
>>  - ... and 7 more: https://git.openjdk.org/jdk/compare/63e13e69...17100ab8
>
> src/java.base/share/classes/java/io/IO.java line 98:
> 
>> 96:      *                 or if an I/O error occurs
>> 97:      */
>> 98:     public static String readln(String prompt) {
> 
> Did we consider Optional<String> here? Maybe that is to complicated for an onramp?

Have we considered it? Yes, momentarily. Will we implement it here? No, certainly.

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PR Review Comment: https://git.openjdk.org/jdk/pull/19112#discussion_r1600152722