Probably you need to compile the source code from command line first. The .jj is generated by javacc. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259490#4259490 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4259490