PR #20772 introduced an optimization for writeUTF, which can also be used in DataOutputStream::writeUTF.
------------- Commit messages: - extract to JDKUTF - code style - optimize ObjectOutputStream#writeUTF - optimize DataOutputStream#writeUTF - add benchmark Changes: https://git.openjdk.org/jdk/pull/20886/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20886&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8339699 Stats: 393 lines in 5 files changed: 212 ins; 151 del; 30 mod Patch: https://git.openjdk.org/jdk/pull/20886.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20886/head:pull/20886 PR: https://git.openjdk.org/jdk/pull/20886
