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eclipseeclipse-cdt

Cannot launch CDT: java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter

I am trying to use Eclipse CDT under Ubuntu 18.04 LTS. I get the same error as many others, but I could not find a solution in what I read.

I try to launch with

$ eclipse &
OpenJDK 64-Bit Server VM warning: Ignoring option MaxPermSize; support was removed in 8.0

and I get

/home/user1/.eclipse/org.eclipse.platform_3.8_155965261/configuration/1551271296090.log

When checking /usr/lib/eclipse/configuration/config.ini (as per this) I found the following lines (among others)

osgi.framework=file\:plugins/org.eclipse.osgi_3.8.1.dist.jar
osgi.bundles=reference\:file\:org.eclipse.equinox.simpleconfigurator_1.0.301.dist.jar@1\:start
org.eclipse.equinox.simpleconfigurator.configUrl=file\:org.eclipse.equinox.simpleconfigurator/bundles.info

As for the first two lines, I have files

$ locate eclipse.osgi_
/usr/share/java/org.eclipse.osgi_3.8.1.dist.jar

$ locate simpleconfigurator_1
/usr/lib/eclipse/plugins/org.eclipse.equinox.simpleconfigurator_1.0.301.dist.jar

Nevertheless:

  1. /usr/share/java/org.eclipse.osgi_3.8.1.dist.jar seems to belong to no package (a remnant of some old package?), since 

    $ apt-file search /usr/share/java/org.eclipse.osgi_3.8.1.dist.jar

    gives no results.

  2. I have ver 3.9.1

    $ dpkg -l | grep libequinox-osgi-java
ii  libequinox-osgi-java                          3.9.1-1                               all          Equinox OSGi framework
$ dpkg -L libequinox-osgi-java
/.
/usr
/usr/share
/usr/share/doc
/usr/share/doc/libequinox-osgi-java
/usr/share/doc/libequinox-osgi-java/changelog.Debian.gz
/usr/share/doc/libequinox-osgi-java/copyright
/usr/share/java
/usr/share/java/org.eclipse.osgi-3.9.1.jar
/usr/share/maven-repo
/usr/share/maven-repo/org
/usr/share/maven-repo/org/eclipse
/usr/share/maven-repo/org/eclipse/osgi
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/3.9.1
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/3.9.1/org.eclipse.osgi-3.9.1.pom
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/debian
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/debian/org.eclipse.osgi-debian.pom
/usr/share/java/org.eclipse.osgi.jar
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/3.9.1/org.eclipse.osgi-3.9.1.jar
/usr/share/maven-repo/org/eclipse/osgi/org.eclipse.osgi/debian/org.eclipse.osgi-debian.jar

So I do not know if the problem is here.

How can I solve this?

Could not find an answer here

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891956

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=898086

https://bugs.launchpad.net/ubuntu/+source/eclipse/+bug/1754886

https://ubuntu.pkgs.org/16.04/ubuntu-universe-i386/libequinox-osgi-java_3.8.1-8_all.deb.html

https://askubuntu.com/questions/1031171/eclipse-doesnt-start-on-ubuntu-18-04

Solution

  • You are probably using an older Eclipse version that does not work with Java 9 or higher:

    If using Java 9 or newer please use Eclipse 4.7.1a or newer as it contains fixes in Eclipse launcher to add all JVM modules.

    Do one of the following to solve the problem: