Change Password Logic

public void changePassword(ActionRequest actionRequest,
            ActionResponse actionResponse) throws IOException, PortletException {

        String oldPassword = actionRequest.getParameter("oldPassword");
        String newPassword = actionRequest.getParameter("newPassword");
        String confirmPassword = actionRequest.getParameter("confirmPassword");
       
        ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY);

        User user = themeDisplay.getUser();
        String email = user.getEmailAddress();
       
        boolean sendMail = false;
       
        try {
           
            RegCustomer regCustomer = RegCustomerLocalServiceUtil.getRegCustomer(email);
            if(regCustomer.getPassword().equals(oldPassword)){           
            regCustomer.setPassword(newPassword);
           
            UserServiceUtil.updatePassword(user.getUserId(), newPassword, confirmPassword, false);
           
            regCustomer = RegCustomerLocalServiceUtil.updateRegCustomer(regCustomer);
            sendMail = true;
            }
           
         else if(!regCustomer.getPassword().equals(oldPassword)){
                SessionMessages.add(actionRequest, "request_processed", "Wrong Old Password");
            }

        } catch (Exception e) {
            try {
                BusinessUser businessUser =  BusinessUserLocalServiceUtil.getBusinessUser(email);
                if(businessUser.getPassword().equals(oldPassword)){
                businessUser.setPassword(newPassword);
               
                UserServiceUtil.updatePassword(user.getUserId(), newPassword, confirmPassword, false);
               
                BusinessUserLocalServiceUtil.updateBusinessUser(businessUser);
                sendMail = true;
                }
                  else if(!businessUser.getPassword().equals(oldPassword)){
                    SessionMessages.add(actionRequest, "request_processed", "Wrong Old Password");
                }
            } catch (Exception e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        }