访问修饰符,public,private,protected,以及不写时的区别?
在Java中,访问修饰符用于控制类、方法、变量等成员的可见性和访问范围。主要有四种:public,private,protected和默认(不写)。 1. public:public修饰的类、方法、变量可以被任何类访问。这是最高的访问权限。 2. private:private修饰的类、方法、变量只能在当前类中访问,不能被其他类访问。 3. protected:protected修饰的类、方法、变量可以在当前类、当前包的其他类以及子类中访问。它不能被其他包的类访问。 4. 默认(不写):默认修饰符(不写任何访问修饰符)的类、方法、变量只能在当前类和当前包的其他类中访问。它不能被其他包的类访问。 来说,public的访问范围最广,private的访问范围最小。在选择访问修饰符时,需要根据实际情况考虑需要保护的资源以及需要对哪些代码提供访问权限。 [2023-11-02 21:45:30 | AI小红书种草文 | 212点数解答]
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