I have raised https://bugs.eclipse.org/bugs/show_bug.cgi?id=537526 to cover the installer issue. There are similar bugs marked as fixed for the main Eclipse code, but as this is still visible and relates to the installer, not the main binary, I raised a new bug.
That is probably all from me for now. I shall await news of an updated package to test out or some instructions of other things to try. ** Bug watch added: Eclipse bugs #537526 https://bugs.eclipse.org/bugs/show_bug.cgi?id=537526 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to eclipse in Ubuntu. https://bugs.launchpad.net/bugs/1784358 Title: Eclipse not starting with org.eclipse.equinox.launcher.Main.main java.lang.ClassNotFoundException being issued after updgrade to 18.04 Status in eclipse package in Ubuntu: New Status in eclipse package in Debian: New Bug description: I upgraded from 16.04 to 18.04 on Friday. Following some reboots and updates this morning I am now unable to start the Eclipse IDE. This was working before the upgrade. I have the C++ developer support added to Eclipse. To the best of my memory (and ability to interrogate apt) it is all installed from the Ubuntu repositories. When I click the Eclipse launcher pinned to my side bat I get an error message from Eclipse that reads: An error has occurred. See the log file /home/thomas/.eclipse/org.eclipse.platform_3.8_155965261/configuration/1532947738216.log Viewing the log file I see: !SESSION Mon Jul 30 11:48:58 BST 2018 ------------------------------------------ !ENTRY org.eclipse.equinox.launcher 4 0 2018-07-30 11:48:58.229 !MESSAGE Exception launching the Eclipse Platform: !STACK java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:566) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:626) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) at org.eclipse.equinox.launcher.Main.run(Main.java:1438) at org.eclipse.equinox.launcher.Main.main(Main.java:1414) This is easily repeatable. Some internet searching suggests this problem is present upstream as there is a Debian bug that looks similar: https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=891956 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: eclipse 3.8.1-11 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 Date: Mon Jul 30 11:43:38 2018 InstallationDate: Installed on 2017-11-16 (255 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) PackageArchitecture: all ProcEnviron: LANGUAGE=en_GB:en TERM=xterm-256color PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: eclipse UpgradeStatus: Upgraded to bionic on 2018-07-27 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eclipse/+bug/1784358/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

