Non-static classes hold a link to their parent classes, which can be avoided.
------------- Commit messages: - [PATCH] Change nested classes in java.prefs to static nested classes Changes: https://git.openjdk.java.net/jdk/pull/5971/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5971&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8275342 Stats: 20 lines in 3 files changed: 1 ins; 11 del; 8 mod Patch: https://git.openjdk.java.net/jdk/pull/5971.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5971/head:pull/5971 PR: https://git.openjdk.java.net/jdk/pull/5971
