@jasepow Seeing your log, I noticed your java version was 11.0.3
You need to use java 8: $ java -version java version "1.8.0_191" Java(TM) SE Runtime Environment (build 1.8.0_191-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode) I suggest you to either uninstall your java 11 or use "sudo update-alternatives --config java" to switch your default java to version 8: - https://computingforgeeks.com/how-to-set-default-java-version-on-ubuntu-debian/ - https://tecadmin.net/switch-between-java-versions-on-ubuntu/ - https://www.digitalocean.com/community/tutorials/how-to-install-java-with-apt-on-ubuntu-18-04 Afterwards, don't forget to rerun the workaround steps: $ sudo wget http://archive.ubuntu.com/ubuntu/pool/universe/e/eclipse /libequinox-osgi-java_3.8.1-8_all.deb $ sudo dpkg -x ./libequinox-osgi-java_3.8.1-8_all.deb / $ sudo apt install --reinstall libequinox-osgi-java $ eclipse #(this should launch) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1754886 Title: Eclipse fails to start (java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eclipse/+bug/1754886/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
