package com.mvc.event;import java.io.IOException;import java.util.ResourceBundle;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import com.mvc.constant.Constant;import com.mvc.event.baseEvent.EventHandlerBase;public class LogoutEventHandler  extends EventHandlerBase{  private ResourceBundle rd = ResourceBundle.getBundle( Constant.URL_PROPERTYFILE );  protected String getURL(){    return rd.getString( Constant.LOGOUT );  }  public void forward( HttpServletRequest request, HttpServletResponse response )    throws IOException,           ServletException{    HttpSession session = request.getSession();    if( session != null ){      session.invalidate();    }    super._dispatch( request, response );  }}