Target is not a JDK root. System library was not found. Eclipse Oxygen 4.7 + Java9 error

Question

I\'m trying to test JDK9 (jdk-9-ea+147 version) with Eclipse Oxygen IDE.

I\'ve installed jdk along with jre. From Eclipse Market Place I\'ve installed Java9 Beta ex

Answer 1

This looks like Eclipse bug 494481.

Unfortunately there is currently no fix or workaround listed for the bug.