Hello !
The javac team is pleased to inform you that the compiler support for
private methods in interfaces
has been released through here:
JBS: https://bugs.openjdk.java.net/browse/JDK-8071453,
HG: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/592d64800143
into the JDK9 dev stream.
This is a special announcement to the core libs team so you can consider
whether there are libraries
that could be retrofitted to use this feature -
https://bugs.openjdk.java.net/browse/JDK-8074282 is
also in consideration - when this is completed, you will have
suggestions from the compiler on where
such refactorings are possible.
We appreciate your testing and any feedback and defect reports.
Thanks!
Srikanth