jdk 9 install

https://help.ubuntu.com/community/Java#OpenJDK_Java_9 suggests to compile it. I would first try to manually download https://packages.ubuntu.com/xenial/openjdk-9-jdk , try to install it (with 'sudo dpkg -i' or double-clicking on the .deb file if you installed GDebi), discover what dependencies are missing, get them on https://packages.ubuntu.com and try to install them, etc. It is dependency hell but it sometimes has an happy end. You do not want to go as far as substituting basic packages such as libc6 though!

> It is dependency hell

It is hell, period, a terrible practice I would have never expected from senor Bananna :/

Compile \o/

ignore