RFR: 7030853: JDK 7 Serializable Swing classes not compatible with JDK 6 [v2]

[Prasanta Sadhukhan]

On Thu, 8 Dec 2022 03:30:54 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..
>
> Prasanta Sadhukhan has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Serialzation warning added in javax.swing package
>  - Serialzation warning added in javax.swing package

OK. Added the same in javax.swing package..
Retained individual class too as the warnings are present in other classes too

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