sorry for tha bad subject. I'll try to ask in another way: How is it possible to handle the packages java.util and java.io in the same way as java.lang ? I have a lot of jsp files, which uses this packages without imports. In Bea Weblogic Server all works fine, but in JBoss 4.2.2 I get a lot of JasperExceptions. Thanks for your help View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4159750#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...