How to access a variable within the same package?

Question

Java

I want to create a separate class purely for variables, what should be the class, methods and variables?
public, etc.
I swim shallowly in this, but I want to move it for convenience)

Answer 1

You don't need to do this. This is contrary to the OOP ideology.
An object is not something with fields, methods, interfaces and other nonsense.
The primary meaning of an Object is that it is a data structure. And then already goes "with methods of operation with these data".
Thus, globally - an object is a place where data is stored, and variables must be encapsulated, not in the way you want.

Answer 2

I think it will be easier to create a class with static variables.

Answer 3

I want to create a separate class purely for variables

and what will the class methods "purely for variables" do?