Increase speed of finding components in large swing hierarchy.#261

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SeanBurnsUK wants to merge 2 commits intoassertj:mainfrom

SeanBurnsUK:main

Commits on Feb 24, 2021

Do the entire search in a single event on the swing thread rather queue hundreds possible millions of blocking events for the swing thread.
SeanBurnsUK
committed

Commits on Feb 25, 2021

Use effectively final instead of atomic reference.
SeanBurnsUK
committed