Use string concatenation instead of `String.format`. -------------
Commit messages: - 8276904: Optional.toString() is unnecessarily expensive Changes: https://git.openjdk.java.net/jdk/pull/6337/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6337&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8276904 Stats: 4 lines in 4 files changed: 0 ins; 0 del; 4 mod Patch: https://git.openjdk.java.net/jdk/pull/6337.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/6337/head:pull/6337 PR: https://git.openjdk.java.net/jdk/pull/6337
