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从零到一：深入理解Java中的封装、继承与多态

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类和对象（Classes and Objects）类是Java中面向对象编程的基本构建块，它定义了对象的属性和方法。对象是类的实例，具有类定义的属性和行为。 ...

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面向对象三大特性：封装、继承和多态。 1. 封装 1.1 封装的概念在面向对象程式设计方法中，封装（英语：Encapsulation）是指一种将抽象性函式接口的实现细节部份包装、隐藏起来的方法。封装可以被认为是一个保护屏障，防止该类的代码和数据被外部类定义的代码随机访问。要访问该类的代码和数据...

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万字详解Java的三大特性：封装 | 继承 | 多态

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JAVA类和对象（封装，继承，多态）（二）

import是用来导入其他包中的类在这里tect是一个包，bao又是一个包，导入方式是import +包名+类名。引用权限private 同一个包同一个类才可以用default（默认不写）同包就行protect 不同包的子类可以用public。随...

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