Update: Note that as of October 11/2017, Java 9 is 100% supported “out of the box” by Eclipse IDE, Oxygen Edition; Java 9 can be used to run your Eclipse IDE, Oxygen Edition, and can be used to build Java 9 applications without additional configuration. Download or update today.
I’d taken a little break from testing Eclipse Platform on Java 9 Jigsaw builds. A few nights ago, I pulled down the latest builds of both and gave them a spin.