500 Servlet Exception

/var/resin/hosts/www.caucho.com/webapps/resin-3.1/WEB-INF/work/_jsp/_examples/_burlap_22dadd/_demo__jsp.java:10:
error: package example does not exist
import example.MathService;
              ^
/examples/burlap-add/demo.jsp:12: error: cannot find symbol
MathService math = (MathService) factory.create(MathService.class, url);
^
  symbol:   class MathService
  location: class _demo__jsp
/examples/burlap-add/demo.jsp:12: error: cannot find symbol
MathService math = (MathService) factory.create(MathService.class, url);
                    ^
  symbol:   class MathService
  location: class _demo__jsp
/examples/burlap-add/demo.jsp:12: error: cannot find symbol
MathService math = (MathService) factory.create(MathService.class, url);
                                                ^
  symbol:   class MathService
  location: class _demo__jsp
4 errors


Resin/4.0.65 Server: 'app-0'