RFR: 8305785: Avoid redundant HashMap.containsKey call in java.util.regex

Mon May 22 10:30:57 UTC 2023

On Mon, 3 Apr 2023 16:58:15 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> `Pattern.namedGroups` and `Matcher.namedGroups` contains only non-null values. It means instead of separate `containsKey`+`get` calls, we can use single `HashMap.get` call and then compare result with null.
> Result code is a bit simpler and faster.

Thank you for review!

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PR Comment: https://git.openjdk.org/jdk/pull/13303#issuecomment-1556966620