Factory pattern keywords

* dependency and new() — factory to replace new()

See also post on eclipse’s factory refactor.
see [[ head first design patterns ]]

* delegating — Abstract-Creator object delegates instantiation to concrete subclasses, because of “knowledge” and “responsibility”

* knowledge — about a specific concrete class is usually with one developer

* responsibility — ideally each developer should be owner of a small, well-defined API. Other developers write client objects

* decouple — ideally different interacting objects should not break each other when one /invariably/ undergoes a change.

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