struts+ajax

package org.leno.struts.action; import java.text.*; import java.util.Date; import javax.servlet.http.HttpServletRequest; import org.apache.struts.action.*; import org.apache.struts.validator.ValidatorActionForm; public class ReservationForm extends ValidatorActionForm { private String arrivalDate; private String departDate; private String smokingPref; private String requests; private String name; private String telephone; private DateFormat parser = new SimpleDateFormat("MM/dd/yyyy"); public String getArrivalDate() { return arrivalDate; } public Date getArrivalDateAsDate() { try { return parser.parse(arrivalDate); } catch(ParseException e) { return null; } } public void setArrivalDate(String arrivalDate) { this.arrivalDate = arrivalDate; } public Date getDepartDateAsDate() { try { return parser.parse(departDate); } catch(ParseException e) { return null; } } public String getDepartDate() { return departDate; } public void setDepartDate(String departDate) { this.departDate = departDate; } public String getSmokingPref() { return smokingPref; } public void setSmokingPref(String smokingPref) { this.smokingPref = smokingPref; } public boolean isSmokingRequest() { return smokingPref.equalsIgnoreCase("smoking"); } public String getRequests() { return requests; } public void setRequests(String requests) { this.requests = requests; } public ActionErrors validate(ActionMapping mapping , HttpServletRequest request) { ActionErrors errors; //validate framework's common validator errors = super.validate(mapping, request); //validate continute... DateFormat parser = new SimpleDateFormat("MM/dd/yyyy"); try { Date arrival = parser.parse(arrivalDate); Date departure = parser.parse(departDate); if(departure.before(arrival)) { errors.add(ActionErrors.GLOBAL_MESSAGE , new ActionMessage("errors.departure.before.arrival" , true)); } } catch (Exception e) { // Do nothing -- date format validation is handled in // validation.xml. } return errors; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getTelephone() { return telephone; } public void setTelephone(String telephone) { this.telephone = telephone; } }