Exception while calling the Action method

[chandra sekhar saripaka <ch...@gmail.com>]

Hi,

    I  am new to JSF. Can any one please solve this for me.What might
be my mistake in doing this.

exception

javax.servlet.ServletException: Error calling action method of
component with id userForm:_idJsp7
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

root cause

javax.faces.FacesException: Error calling action method of component
with id userForm:_idJsp7
	org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
	javax.faces.component.UICommand.broadcast(UICommand.java:106)
	javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
	org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
	org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

Thanx in Advance.
Regards,
Chandru