servlet中如何正确有效的删除cookie

Cookie emailCookie = new Cookie(COOKIE_NAME_EMAIL, null);Cookie pwdCookie = new Cookie(COOKIE_NAME_PWD, null);for(Cookie c : new Cookie[]{emailCookie, pwdCookie}){c.setMaxAge(-1);c.setDomain(COOKIE_DOMAIN);c.setPath(COOKIE_PATH);response.addCookie(c);}