RFR: 8358552: EndOfFileException in System.in.read() and IO.readln() etc. in JShell

[Christian Stein]

On Tue, 10 Jun 2025 08:29:15 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this change to handle an `EndOfFileException` while reading input from a user console in such a way, that no stacktrace is emitted. The handling of the `Ctrl+D` command is left as-is; here the following underlying core-libs should stay in control:
> 
>  - `System.in.read()`
>  - `System.console().reader().read()`
>  - `System.console().readLine()`
>  - `System.console().readPassword()`
>  - `System.in.readAllBytes()`
>  - `IO.readln()`

test/langtools/jdk/jshell/InputUITest.java line 78:

> 76:                 "System.console().readPassword()",  " ==> null",
> 77:                 "IO.readln()",                      " ==> \"null\""
> 78:                 // TODO , "System.in.readAllBytes()", " ==> " // ... hangs forever

Manual testing in a JShell session with this change set applied shows the watend behaviour: breaks with Ctrl+C and no exception is printed for Ctrl+D

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PR Review Comment: https://git.openjdk.org/jdk/pull/25713#discussion_r2174399555