40 lines
1.6 KiB
Markdown
40 lines
1.6 KiB
Markdown
---
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layout: pattern
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title: Abstract Factory
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folder: abstract-factory
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permalink: /patterns/abstract-factory/
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pumlid: PSZB3OD034NHLa81Czwd6sCC39gVxEUWT1_ssLmTtQLqgR5fM7sTmFGtaV6TZu8prd0r6HtQaMKqAZLk1XjT_E6qgPUZfyc0MdTgx0-8LuUn8ErFXdr98NypXxKyezKV
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categories: Creational
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tags:
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- Java
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- Gang Of Four
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- Difficulty-Intermediate
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---
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## Also known as
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Kit
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## Intent
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Provide an interface for creating families of related or dependent
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objects without specifying their concrete classes.
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## Applicability
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Use the Abstract Factory pattern when
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* a system should be independent of how its products are created, composed and represented
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* a system should be configured with one of multiple families of products
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* a family of related product objects is designed to be used together, and you need to enforce this constraint
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* you want to provide a class library of products, and you want to reveal just their interfaces, not their implementations
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## Real world examples
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* [javax.xml.parsers.DocumentBuilderFactory](http://docs.oracle.com/javase/8/docs/api/javax/xml/parsers/DocumentBuilderFactory.html)
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* [javax.xml.transform.TransformerFactory](http://docs.oracle.com/javase/8/docs/api/javax/xml/transform/TransformerFactory.html#newInstance--)
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* [javax.xml.xpath.XPathFactory](http://docs.oracle.com/javase/8/docs/api/javax/xml/xpath/XPathFactory.html#newInstance--)
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## Credits
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* [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)
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