NoClassDefFoundError: javax.portlet.PortletResponse

 hello dear community,

 i have the following problem:

i made a class, which reads an xml, writes the elements in new objects with getter and setter.
this  class works as my datasource in my grid.it works good.
when i edit a field in my grid i get the following message two times:

 E   SRVE0026E: [Servlet-Fehler]-[Faces Servlet]: java.lang.NoClassDefFoundError: javax.portlet.PortletResponse

have someone an idea, what this is?

Hi, maikvogel!

It would be great if you could provide me some more information on this issue, i.g. post a code snippet so that I can reproduce this case on my machine. Thank you in advance for your feedback.

Regards!

 i  downloaded portlet-api.jar ad put it in my web-libs folder, now it works ok.