RFR: JDK-8297299 SequenceInputStream should not use Vector [v6]

[Alan Bateman]

On Mon, 21 Nov 2022 17:39:24 GMT, Markus KARG <duke at openjdk.org> wrote:

>> There is no need to use a temporary Vector within the constructor of SynchronizedInputStream, as more efficient (non-synchronized) alternative code (like List.of) will do the same in possibly less time. While the optimization is not dramatic, it still makes sense to replace Vector unless synchronization is really needed.
>
> Markus KARG has updated the pull request incrementally with one additional commit since the last revision:
> 
>   private member variables

Marked as reviewed by alanb (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11249