Say I have a class, Master, that starts up my program, and I have another class, TerminalIO, that has functions and data for talking to stdin and stdout. I then instantiate a Master object from main().
In code within the methods of TerminalIO, how would I access the properties and functions of Master?
The reason I'm asking about this is because my program needs to store some shared data (both enums and regular variables), and I was wanting to know of an efficient way to do that. I'm not so sure this is the best way, but it's certainly better than toying with the package keyword and trying to store "global" data at module level or whathaveyou.
I think it's worth noting that I will have many other objects that also want access to this shared data, so a simple reference may not be the best of ideas.
You will have to get a reference to Master inside your TerminalIO.
There are a couple of ways you could use:
Have Master be a singleton, so there is only one instance which you can access with Master.instance, so you'll have something like Master.instance.masterProperty.
Having a TerminalIO factory method in Master which constructs a TerminalIO and passes a Master reference to the constructor.