I’m a few days late to the Java 9 party, but installing Eclipse Oxygen after installing Java 9 on MacOS, I get this:
Looking in the .log file:
java.lang.NoClassDefFoundError: javax/annotation/PreDestroy at org.eclipse.e4.core.internal.di.InjectorImpl.disposed(InjectorImpl.java:450) at org.eclipse.e4.core.internal.di.Requestor.disposed(Requestor.java:156) ...snip... Caused by: java.lang.ClassNotFoundException: javax.annotation.PreDestroy cannot be found by org.eclipse.e4.core.di_1.6.100.v20170421-1418 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:433)
Following instructions here, I added:
--add-modules=ALL-SYSTEM
Now Eclipse starts up, but adding Java 9 path on MacOS as /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home, Eclipse doesn’t want to see this as a valid jdk:
Continuing to follow the instructions, installing the Java 9 Support plugin from:
https://marketplace.eclipse.org/content/java-9-support-oxygen/
This still didn’t help but pressing the ‘Search’ button finds the Java 9 install and adds it to the list, which is odd because it points to exactly the same path:
At this point, things are still not good, as the System Libraries are not picked up:
It looks like official support is coming in the 4.7.1a release due on 10/11/17. Maybe at this point it’s best to wait for the official release.
