I installed RJ for StatEt with:
> install.packages(c(\"rj\", \"rj.gd\"), repos=\"http://download.walware.de/rj-2.1\") Installiere Pakete nach \'C:/Users/e
RJ 2.1 is not compatible to Java 9.0.1. You can point to different versions of JAVA if you have them installed. Please install Java 8 and select JRE 8 in your run configuration, for example:
I don't change much my R environment configuration