Please review this PR to use modern APIs and language features to simplify `equals` and `hashCode` in the java.text area.
* Some changes to `equals` and `hashCode` are refactoring rather than modernization. Such changes can be as trivial as rearranging, adding, or commenting checks. * java.text area contains more classes whose `equals` and `hashCode` could be simplified; for example: sun.text.CompactByteArray or java.text.DigitList. However, I found no evidence of `equals` and `hashCode` in those classes being used in source or tests. Since writing new tests in this case seems unreasonable, I **excluded** those classes from this PR. ------------- Commit messages: - Initial commit Changes: https://git.openjdk.org/jdk/pull/14752/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14752&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8311188 Stats: 121 lines in 15 files changed: 31 ins; 52 del; 38 mod Patch: https://git.openjdk.org/jdk/pull/14752.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14752/head:pull/14752 PR: https://git.openjdk.org/jdk/pull/14752
