package demostrcuts;import org.apache.struts.action.*;import javax.servlet.http.*;public class DemoStructAction extends Action {  public ActionForward perform(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {    /**@todo: complete the business logic here, this is just a skeleton.*/    DemoActionForm demoActionForm = (DemoActionForm) actionForm;    throw new java.lang.UnsupportedOperationException("Method perform() not yet implemented.");  }}