QuickTip: Eclipse on Ubuntu : java.lang.ClassNotFoundException: org.eclipse.core.runtime.Plugin

Posted on Monday, April 14, 2008


This problem occurs if you do not have the JRE from Sun, but you are using the JRE from GNU. To get the JRE from Sun execute the following command

$sudo apt-get install sun-java5-jre

now you should get the JRE installed in the directory /usr/lib/jvm

if you hit $ java -version now you should see something like this

java version “1.5.0_13”
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05)
Java HotSpot(TM) Server VM (build 1.5.0_13-b05, mixed mode)

Now your Eclipse Europa should work without complaining.

Posted in: Java, linux