Declaring a non-static method of a package access class as public does not make sense! ?

huangjj23

Because this class is not visible outside the package, it cannot call any of its non-static methods (can static methods be used?). Isn't it? thanks, thanks!

珈蓝易拉罐

Any public class is visible inside and outside the package, only non-public classes are not visible outside the package.

珈蓝易拉罐

The key is that non-static methods can only be called from objects, not from classes.
Only static methods can be called directly on the class name without generating an object.

huangjj23

Ok. It's talking about the package access class (non-public class). Is the above statement correct?

珈蓝易拉罐

Non-public classes, classes can't be seen, how can they access their non-static methods?

珈蓝易拉罐

Oh, it's static.
After all, static and non-static are not directly accessible, huh, huh.

珈蓝易拉罐

Package access classes whose "method declaration is publicly meaningless" are not more meaningful than non-public methods.
But there are special cases, such as a package access permission class, inheriting another public class, or implementing a public interface, then those overloaded or implemented methods must not be less than the parent class's limit, if The parent class is public, and it can only be public.
And these methods can indeed be accessed indirectly from the parent class reference.