抽象的一些基本概念

Others 2021-12-15 03:30:56 views: null

关于抽象类的一些知识

  1. 抽象类用关键字abstract实现

  2. 抽象类只能单继承

  3. 抽象方法只有方法名，没有方法体，需要子类去实现

  4. 抽象类中可以有普通方法，也可以这样说，抽象方法一定在抽象类中，抽象类中不一定有抽象方法

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Origin blog.csdn.net/qq_47499256/article/details/121236705
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