The System Property "jdk.jmx.mbeans.allowNonPublic" was added with JDK-8010285, to optionally be compatible with a time before JDK-8, when Management Interfaces being public was not enforced.
>From JDK-8010285: _The system property "jdk.jmx.mbeans.allowNonPublic" is used to revert to the old behaviour allowing non-public management interfaces. This property is considered to be transitional and will be removed in the subsequent releases._ That was a long time ago. This compatibility convenience flag should be removed. ------------- Commit messages: - 8344966: Remove the allowNonPublic MBean compatibility property Changes: https://git.openjdk.org/jdk/pull/23098/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23098&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8344966 Stats: 289 lines in 6 files changed: 0 ins; 283 del; 6 mod Patch: https://git.openjdk.org/jdk/pull/23098.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23098/head:pull/23098 PR: https://git.openjdk.org/jdk/pull/23098