RFR: 8248122: java.base should not handle JavaFX application in a specific way

[Phil Race]

On Sat, 31 Oct 2020 16:10:23 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> This will cause a regression in behavior. It will break existing JavaFX applications that do not have a main program. It could also break applications that create or use certain JavaFX objects in the class initializer of their JavaFX application.
>> 
>> There was [some initial discussion](https://bugs.openjdk.java.net/browse/JDK-8202553?focusedCommentId=14176584&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14176584) around doing this as a follow-on to the removal of JavaFX from JDK 11, but if it is to be done, it needs to be discussed first. It would need to be done using a process similar to deprecation-for-removal. We would need to make changes in the JDK and/or JavaFX to warn about this in one release, and then remove it in the following. A CSR would be needed for both steps.
>> 
>> I note that while I disagree with the rationale described in [JDK-8248122](https://bugs.openjdk.java.net/browse/JDK-8248122) for making this change, I am not necessarily opposed to the change itself.
>
> This also needs to be discussed on the openjfx-dev mailing list, since it will have behavioral compatibility implications for JavaFX.

Indeed this is very much of out the blue and the pre-existence of a bug report discussing this does not mean it
has been accepted to be done .. 

And launcher changes need to be done carefully. I would expect them to come from someone who has a long history of contributions in this area and has had extensive discussions with stakeholders before moving on to code ..

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PR: https://git.openjdk.java.net/jdk/pull/978