RFR: CODETOOLS-7903216: jcstress: JDK 19 compatibility fixes [v2]

[Aleksey Shipilev]

> Make sure we are able to build and run with JDK 19. GHA already tests this, and is currently failing.

Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into 7903216-jdk19
 - Fix

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Changes:
  - all: https://git.openjdk.org/jcstress/pull/115/files
  - new: https://git.openjdk.org/jcstress/pull/115/files/a47e7829..f03779a1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jcstress&pr=115&range=01
 - incr: https://webrevs.openjdk.org/?repo=jcstress&pr=115&range=00-01

  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jcstress/pull/115.diff
  Fetch: git fetch https://git.openjdk.org/jcstress pull/115/head:pull/115

PR: https://git.openjdk.org/jcstress/pull/115