A. Create an instance variable called model in the application class (i.e., not the view)
to store a DVDCollection instance.
B. Add code to the blank constructor in the application class to set the model to
DVDCollection.example1();
At this point, the model is now created and stored. The example model contains 5
DVDs. However, when we start the application, we still don’t see the DVDs
appearing. That is because we have not yet written code to update the contents of
the three lists. Regardless of the view that we choose to use, all of them must be
able to update their appearance to reflect the current state of the model.
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