问题
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 extension:
The problem is, when I'm trying to add new installed jre from Eclipse I get following error:
Interesting thing is that this error doesn't occur with installations of previous JDK versions:
Does anyone encounter simillar problem with Eclipse Oxygen? Any feedback is appreciated.
回答1:
I've just successfully tested JDK9 with Eclipse Oxygen IDE following the approach you detailed.
Here are the details of my installation (under Windows 10):
I downloaded and installed Java jdk-9+181 from http://jdk.java.net/9/
I downloaded and installed Eclipse Oxygen from https://www.eclipse.org/downloads/download.php?file=/oomph/epp/oxygen/R/eclipse-inst-win64.exe
I started Eclipse and attempted to add JRE9 (Windows -> Preferences -> Java -> Installed JREs -> Add...)
I got the error reported in the OP ("Target is not a JDK root...").
I then installed Java 9 Support (BETA) for Oxygen as detailed here: https://marketplace.eclipse.org/content/java-9-support-beta-oxygen
I restarted Eclipse and tried to add JRE 9 again. This time it worked fine:
- Also, see https://wiki.eclipse.org/Java9/Examples for further details.
回答2:
This looks like Eclipse bug 494481.
Unfortunately there is currently no fix or workaround listed for the bug.
回答3:
You should use Standard VM not standard 1.1x VM best regards! se pic
回答4:
Oxygen does not come with java9 support. You need to install the eclipse Java9 support patch from the market place https://marketplace.eclipse.org/content/java-9-support-beta-oxygen to be able to use Java9 or you can update from "Help" menu bar.
Ref - https://bugs.eclipse.org/bugs/show_bug.cgi?id=509704
回答5:
set the path to:: /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
来源：https://stackoverflow.com/questions/41029647/target-is-not-a-jdk-root-system-library-was-not-found-eclipse-oxygen-4-7-jav