On Sat, 9 Nov 2024 07:45:14 GMT, Michael Strauß <mstra...@openjdk.org> wrote:

>> None of these classes can be extended by user code, and any attempt to do so 
>> will fail at runtime with an exception. For this reason, we can seal the 
>> class hierarchy and remove the run-time checks to turn this into a 
>> compile-time error instead.
>> 
>> In some cases, `Node` and `Shape` are extended by JavaFX classes in other 
>> modules, preventing those derived classes from being permitted subclasses. A 
>> non-exported `AbstractNode` and `AbstractShape` class is provided just for 
>> these scenarios. Note that introducing a new superclass is a source- and 
>> binary-compatible change (see [JLS ch. 
>> 13](https://docs.oracle.com/javase/specs/jls/se22/html/jls-13.html)).
>> 
>> I'm not sure if this change requires a CSR, as it doesn't change the 
>> specification in any meaningful way. There can be no valid JavaFX program 
>> that is affected by this change.
>
> Michael Strauß has updated the pull request with a new target base due to a 
> merge or a rebase. The pull request now contains eight commits:
> 
>  - Merge branch 'master' into feature/sealed-classes
>  - Merge branch 'master' into feature/sealed-classes
>  - Merge branch 'master' into feature/sealed-classes
>  - Merge branch 'master' into feature/sealed-classes
>  - add comment
>  - Merge branch 'master' into feature/sealed-classes
>  - remove documentation
>  - Seal Node, Camera, LightBase, Shape, Shape3D

looks good.

-------------

Marked as reviewed by angorya (Reviewer).

PR Review: https://git.openjdk.org/jfx/pull/1556#pullrequestreview-2473477598

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