RFR: 8316000: File.setExecutable silently fails if file does not exist [v5]

[Alan Bateman]

On Fri, 22 Sep 2023 22:46:43 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> On Windows, do not return `true` from the `java.io.File` methods `setReadable(boolean, boolean)` and `setExecutable(boolean, boolean)` if the file does not exist.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8316000: Align the spec and return verbiage

I looked at the latest update (8189784a) and have two suggestions

1. Revert the method descriptions to what you had in the previous version (8640decd). That makes it clear it returns the value of the parameter when the platform doesn't support file permissions.

2. In the return description, make it clear that the method fails if the user does not have permission to change the access permissions, or the platform supports file permissions but the underlying file system does not implement the read/whatever permission.

I think that will cover the 2x2 cases of platform vs. underlying file permissions that the previous iterations grappled with.

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PR Comment: https://git.openjdk.org/jdk/pull/15673#issuecomment-1733521012