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Home > List of blog posts > 补0930作业 实例演示子类和三种访问限制符的使用场景
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补0930作业 实例演示子类和三种访问限制符的使用场景
月迎下弦的博客
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实例演示子类的三个应用场景

1功能扩展

2代码复用

3方法重写

功能扩展.jpg代码复用.jpg方法重写.jpg 实例演示类成员的三种访问限制符的使用场景

1public（公用属性或方法） 类中可以访问，子类可以访问 ，类外可以访问

2protected（受保护的属性或方法） 类中可以访问 ，子类可以访问 ，类外不可以访问

3private（私有的属性或方法） 类中可以访问，子类不可访问 ，类外不可以访问

类中.jpg类外访问.jpg子类.jpg

Correction status：qualified

Teacher's comments：作业完成的相当棒, 直观, 特别是字体, 很舒服,但并不适合写代码
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