报错 cannot be cast to com.iflve.domain.Employee怎么解决

代码

 public Employee checkEmployee(Employee emp) {
        String sql = "select * from employee where name=? and pwd=?" ;
        List<Employee> list = sessionFactory.getCurrentSession().createSQLQuery(sql)
        .setString(0, emp.getName()+"")
        .setString(1, emp.getPwd()).list();
        if(list.size()>=1)
        {           
            return  list.get(0); //cannot be cast to com.iflve.domain.Employee
        }else{
            return null;
        }

    }

cannot be cast to com.iflve.domain.Employee
换成这个return （Employee）list.get(0);还是报错，代码完全是按照教程上写的。求高手指点 ，这里的类型应该是可以直接转化的呀，求指点