RFR: 8186958: Need method to create pre-sized HashMap [v18]

[Chris Hegarty]

On Wed, 13 Apr 2022 22:20:14 GMT, XenoAmess <duke at openjdk.java.net> wrote:

>> 8186958: Need method to create pre-sized HashMap
>
> XenoAmess has updated the pull request incrementally with one additional commit since the last revision:
> 
>   update LastModified

LGTM.

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Marked as reviewed by chegar (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7928