On Tue, 1 Oct 2024 22:29:39 GMT, Andy Goryachev <ango...@openjdk.org> wrote:

> There might be a very narrow use case (like debugging) when developer might 
> need to extend to supply a custom `toString()` or some other method.
> 
> From a high level design standpoint, I do agree with making these classes 
> final.

Maybe, but that's not a sufficient reason to allow subclassing, as the same 
could be said for all cases of encapsuluation and inheritance control. 
Alternatives are:
1) Use the debugger to mark objects
2) Use a tool to change method definitions at runtime
3) Download OpenJFX and build it locally with the required changes

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PR Comment: https://git.openjdk.org/jfx/pull/1587#issuecomment-2387234029

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