How can I make a member of one class accessible from another class?

I thought by making a data member protected it was available to all members of the package, but the compiler is giving me an error. If I put the class name dot the data object it thinks it is a function and gives an error.

I can't post actual code or I'll get in trouble.
I can't create an instance of A because the class
needing to call the structure is a Thread and there
will be multiple instances of it.
I need one solid structure and it can't be static
because it has to be ablet o change.So you can't use a static and you can't use an instance. So how exactly do you ever access A?
BTW you are describing the impossible so you need to take a deep breath and give an explanation that makes even a modicum of sense. Hint: what you have described thus far is nonsensical enough that nobody is going to want to steal your precious code trust me.

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How can I make a member of one class accessible from another class?

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