Specialization of Collections

Collection Classes - slide 10 : 36

I want to make my own specialized/extended collection.
Which class should be selected as superclass of my collection class?

The class constructed from Collection<T> is a useful starting point

A class Animal.

A class AnimalFarm - a subclass of Collection<Animal> - testing protected members.

A sample client of AnimalFarm - revealing use of protected Collection<Animal> methods.

Output from sample client of AnimalFarm.

The protected, virtual methods InsertItem, RemoveItem, SetItem, and ClearItems are called from all relevant methods in Collection<T>
Overridden members in AnimalFarm control the actual insertions and removals in the collection