RFR: JDK-8297299 SequenceInputStream should not use Vector [v5]

[Markus KARG]

On Mon, 21 Nov 2022 06:31:47 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Markus KARG has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:
>> 
>>   Jens' Proposal
>
> Thank you Markus for the changes. The latest version in `2e957354` looks fine to me. While we are at it, would you be willing to change the member variables `e` to `private final` and the `in` to `private`? From what I can see, I don't see any other class accessing these package private fields.

@jaikiran Kindly requesting your review approval. :-)

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