The class is PiePlot, which is part of JFreeChart.jar, and this jar IS there in the WAR file. I thought any class under WEB-INF/lib is automatically under the classpath, otherwise it would have failed on my local machine also. Or maybe I am missing something like the difference between running inside the IDE and on the server. So, how to check the classpath on the server? Thanks, Tong View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3984530#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...