官术网_书友最值得收藏!

How it works...

Polymorphism is something you will easily be using already by simply applying good object-oriented principles to the design of your classes. With the abstract Shuttle class, we saw that the class took on the shape of the NasaShuttle class and the RoscosmosShuttle class when it was used to derive those new classes from its abstraction. The constructor of the NasaShuttle class was then overridden to provide the same method name, but implemented using different signatures.

This is at the heart of polymorphism. Most likely, you have been using it without knowing about it.

主站蜘蛛池模板: 马尔康县| 南昌县| 玛曲县| 山东省| 兖州市| 建阳市| 虹口区| 西丰县| 来宾市| 浑源县| 班戈县| 磐安县| 汉沽区| 舞阳县| 航空| 宜宾县| 龙泉市| 西平县| 阿拉善右旗| 永康市| 革吉县| 上虞市| 南部县| 蓝田县| 竹北市| 鄂尔多斯市| 平武县| 黑山县| 徐汇区| 罗田县| 德阳市| 苗栗县| 宣威市| 通州区| 镇沅| 奎屯市| 翼城县| 营口市| 平远县| 南平市| 达孜县|