Closed YuKanJiu closed 3 years ago
http://hollischuang.gitee.io/tobetopjavaer/#/basics/object-oriented/inheritance-composition
http://hollischuang.gitee.io/tobetopjavaer/#/basics/object-oriented/inheritance-composition![图片](https://user-images.githubusercontent.com/25581199/119147701-68b0e080-ba7e-11eb-85fe-2b3310a79e3b.png)