RFR: 8373097: Save command should create missing parent directories

[Jan Lahoda]

On Thu, 4 Dec 2025 18:08:56 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this change enhancing the `/save <file>` command in JShell to create missing parent directories.
> 
> Prior to this change, when the <file> argument of a `/save` command starts with a list of directory names, of which at least one does not exist, the command fails with an exception reading:
> 
> | File 'some/path/Snippet.java' for '/save' threw exception: java.nio.file.NoSuchFileException: some\path\Snippet.java
> 
> 
> Any exception happening during the creation of missing parent directories (using `Files.createDirectories` API) is caught and transformed into file-related error message.

Looks good to me, thanks!

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Marked as reviewed by jlahoda (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28662#pullrequestreview-3586310666