public String execute() { String ret = null; IFacade ifobj = new Facade(); ActionContext cte = ActionContext.getContext(); session = cte.getSession(); System.out.println("session" + session.get("ua")); UserAccount userAccount = (UserAccount) session.get("ua"); gen = ifobj.generateInternetBankingPin(userAccount); System.out.println("Action" + gen); if (gen != null) { ret = "success"; } else { ret = "error"; } return ret; }