Found by IntelliJ IDEA inspection `Java | Java language level migration aids | Java 5 | 'StringBuffer' may be 'StringBuilder'` As suggested in https://github.com/openjdk/jdk/pull/1507#issuecomment-757369003 I've created separate PR for module `java.base` Similar cleanup in the past - https://bugs.openjdk.java.net/browse/JDK-8041679
------------- Commit messages: - [PATCH] Replaces usages of StringBuffer with StringBuilder where appropriate in java.base Changes: https://git.openjdk.java.net/jdk/pull/2922/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2922&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8264029 Stats: 12 lines in 3 files changed: 0 ins; 3 del; 9 mod Patch: https://git.openjdk.java.net/jdk/pull/2922.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/2922/head:pull/2922 PR: https://git.openjdk.java.net/jdk/pull/2922
