RFR: 7030853: JDK 7 Serializable Swing classes not compatible with JDK 6

[Phil Race]

On Wed, 7 Dec 2022 16:35:24 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> The serialized form of the following classes in JDK 7 builds are not compatible with prior versions of Java:
>     javax.swing.text.html.parser.ParserDelegator
>     javax.swing.LayoutComparator
> They need to be declared as not compatible between releases in the API documentation, as is the case for some other serializable Swing classes.
> 
> Since It is widely known that serialized Swing classes are not comptible between major releases, we just didn't add the warning at that couple classes.
> Added the warning..

Is this something that should be handled like the threading policy where the javax.swing package doc spells it out for the entire API ?
Oh, I think that's what Sergey is suggesting too.

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PR: https://git.openjdk.org/jdk/pull/11565