RFR: 8300177 : URISyntaxException fields can be final

[Jaikiran Pai]

On Fri, 3 Feb 2023 18:10:13 GMT, Darragh Clarke <duke at openjdk.org> wrote:

> Made the two fields `input` and `index` final, this didn't need any test changes as far as I could tell so this PR is longer than the diff

This looks fine to me.

Adding a `final` to a field of a `Serializable` type can change the auto-generated value of `serialVersionUID`. In this case (like all other `Serializable` types in the JDK), the class explicitly specifies a `serialVersionUID` value, so this change won't impact that value.

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Marked as reviewed by jpai (Reviewer).

PR: https://git.openjdk.org/jdk/pull/12415