public interface UserDao {
void insert(User user);
void update(User user);
void delete(int userId);
User getById(int userId);
List<User> getAll();
}
public class UserDaoImpl implements UserDao {
@Override
public void insert(User user) {
}
}
properties
userDao=com.example.dao.impl.UserDaoImpl
public class UserDaoTest {
public static void main(String[] args) {
user.setId(1);
user.setAge(20);
}
}
