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 ![alt text](https://github.com/iluwatar/java-design-patterns/blob/master/abstract-factory/etc/abstract-factory.jpg "Abstract Factory")
 
+**Applicability:** Use the Abstract Factory pattern when
+--* a system should be independent of how its products are created, composed and represented
+--* a system should be configured with one of multiple families of products
+--* a family of related product objects is designed to be used together, and you need to enforce this constraint
+--* you want to provide a class library of products, and you want to reveal just their interfaces, not their implementations
+
 ##Builder
 **Intent:** Separate the construction of a complex object from its representation so that the same construction process can create different representations.