RFR: 8368030: Make package bundlers stateless

[Alexander Matveev]

On Thu, 25 Sep 2025 15:45:12 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

>> src/jdk.jpackage/linux/classes/jdk/jpackage/internal/LinuxDebPackager.java line 82:
>> 
>>> 80:             } catch (IOException ex) {
>>> 81:                 // Try the default path if differ
>>> 82:                 if (!realPath.toString().equals(file.toString())) {
>> 
>> Why converting to `String`? `realPath` and `file` are both `Path`. `Path` has `equals` method.
>
> This code is copied from [LinuxDebBundler.java#L108](https://github.com/openjdk/jdk/blame/569e78080b3c25c95d85e9e194626f95f86b9b10/src/jdk.jpackage/linux/classes/jdk/jpackage/internal/LinuxDebBundler.java#L108).
> 
> `Path.equals()` will always return `true` as two Path objects reference the same file. The test must compare path strings, not that two Path objects reference the same file (which they do). That is why `String.equals()` is used.

According to docs `Path.equals()` does not follow symbolic link, unless I miss read something. `isSameFile()` will return true if two paths reference the same file.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27377#discussion_r2380087187