Permission access modifiers in JAVA (public,protected,default,private)

There are four access modifiers in Java: public,protected,default,private

Note: This is about access to the properties and methods in the class, not the access rights of the class

1.default: Package access rights

If nothing is written, default defaults. Of course, you can also explicitly give the default permission

The properties and methods of the default adornment, all other classes in the package have access to that member, but no access to all classes outside of the package.

2.public: Interface access rights

Public-decorated properties and methods are visible to each class

3.private: In-Class access rights

Private and public, private-decorated properties and methods are not accessible to other classes except the class itself.

4.protected: Inherit access rights

First, protected provides the package access rights. In other words, if two classes are within the same package, default and protected provide the same access to the class where the caller resides.

If not in a package, protected provides inherited access, which means that subclasses can access properties and methods that are protected decorated in the parent class.

Their relationship is as follows:

	In-Class	Inherited	In-Package	All other
Public	Is	Is	Is	Is
Protected	Is	Is	Is	Whether
Default	Is	Is	Whether	Whether
Private	Is	Whether	Whether	Whether

Permission access modifiers in JAVA (public,protected,default,private)