The StringBuilder.repeat method was added in JDK 21, which can be used to make some minor optimizations to existing code, including DateTimeFormatterBuilder
------------- Commit messages: - use StringBuilder#repeat append zeros Changes: https://git.openjdk.org/jdk/pull/20245/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20245&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8336792 Stats: 12 lines in 1 file changed: 2 ins; 4 del; 6 mod Patch: https://git.openjdk.org/jdk/pull/20245.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20245/head:pull/20245 PR: https://git.openjdk.org/jdk/pull/20245
