getPath() method is in charge to return the classpath as a String. When I run testcase under Eclipse or with maven, the classpath is an URLClasspath. I wrote the line : | List<URL> urls = getURLs((URLClassLoader) getClass().getClassLoader()); | In your case it looks that it is not an URLClassLoader but a DefaultClassLoader. You need to find a way to get the classpath from this classloader. I have no idea on how eclipse RCP manages it classloader. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3975156#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...