RFR: 8301220: Return value of toArray() of Сollection types from java.base should be trusted

[Glavo]

On Thu, 26 Jan 2023 10:05:28 GMT, Sergey Tsypanov <stsypanov at openjdk.org> wrote:

> > it is necessary to copy the elements to a larger new array
> 
> Right, I missed this is addAll() method. Btw, in this class you could do similar optimization in constructor as well.

Just now, I have pushed some updates and used similar optimizations in some places that were missed before.

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PR: https://git.openjdk.org/jdk/pull/12212