can i use it despite the fact that variables are passed from .java class to jsp throught struts?
In jsp i don't have any "request" object from which get attributes. I simple have an ArrayList "errors" in the java class, with setter ang getter methods, and throught struts i can access to it automatically... But using another library like core is this still possibile?
I don't know a lot about Struts, but I think it also uses the various Servlet/JSP scopes (page, request, session, application). So I would put the Object which has the ArrayList in the smallest possible scope (page if possible, request if not) and then the core tags should have access to it.