RFR: 8186958: Need method to create pre-sized HashMap

[David Holmes]

On Wed, 23 Mar 2022 18:41:59 GMT, XenoAmess <duke at openjdk.java.net> wrote:

> 8186958: Need method to create pre-sized HashMap

src/java.base/share/classes/java/util/Collections.java line 5836:

> 5834:      * @param <K>          the type of keys maintained by this map
> 5835:      * @param <V>          the type of mapped values
> 5836:      * @return initial capacity for HashMap based classes.

Again this method returns a Map

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