RFR: 8297778: Modernize and improve module jdk.sctp [v2]

[Alan Bateman]

On Wed, 30 Nov 2022 09:22:00 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> This PR proposes a variety of modernisations to the `jdk.sctp` module.
>> 
>> During the fix of https://bugs.openjdk.org/browse/JDK-8296024, several improvement areas were identified including: 
>> 
>> * Replacing duplicate code segments 
>> * Making certain fields final 
>> * Using enhanced switch 
>> * Using records 
>> * Fixing typos 
>> * Marking fields participating in serialisation with `@Serial` 
>> * Modernizing toString() implementations 
>> * Using pattern matching 
>> * Using diamond operators
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert dedup and align switch cases

src/jdk.sctp/share/classes/com/sun/nio/sctp/SctpStandardSocketOptions.java line 37:

> 35:  * @since 1.7
> 36:  */
> 37: public final class SctpStandardSocketOptions {

com.sun.nio.sctp.SctpStandardSocketOptions is a JDK-specific API so technically changing it to final is an API change, although with no consequence as there is no accessible constructor.

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PR: https://git.openjdk.org/jdk/pull/11418