RFR: 8303213: Avoid AtomicReference in TextComponentPrintable [v3]

[Andrey Turbanov]

> If CompareAndSwap is not used, then AtomicReference could be replaced with volatile. It simplified code a bit.

Andrey Turbanov has updated the pull request incrementally with one additional commit since the last revision:

  8303213: Avoid AtomicReference in TextComponentPrintable
  
  expand star import

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12018/files
  - new: https://git.openjdk.org/jdk/pull/12018/files/b9e7bd7a..229f9107

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12018&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12018&range=01-02

  Stats: 9 lines in 1 file changed: 8 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/12018.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12018/head:pull/12018

PR: https://git.openjdk.org/jdk/pull/12018