How do you map an abstraction into software ?

We map an abstraction into software form by depicting all its physical characteristics through data items and all its functionality i.e., behaviour through functions which are called methods.

Thus, in an object:

1. there are variables to hold data, called member variables.
2. the values of these member variables define the state of an object.
3. there are member functions/operations/methods that define the behaviour of objects.