In JDK 21, StringBuilder added a repeat method, which can be used to improve j.u.Formatter#trailingZeros
------------- Commit messages: - use StringBuilder#repeat Changes: https://git.openjdk.org/jdk/pull/20018/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20018&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8335645 Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/20018.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20018/head:pull/20018 PR: https://git.openjdk.org/jdk/pull/20018
