issue #333 factory kit pattern introduced

factory-kit/index.md

@@ -0,0 +1,31 @@
+---
+layout: pattern
+title: Factory Kit
+folder: factory-kit
+permalink: /patterns/factory-kit/
+categories: Creational
+tags:
+ - Java
+ - Difficulty-Beginner
+ - Functional
+---
+
+## Also known as
+Virtual Constructor
+
+## Intent
+Define factory of immutable content with separated builder and factory interfaces.
+
+![alt text](./etc/factory-kit_1.png "Factory Kit")
+
+## Applicability
+Use the Factory Kit pattern when
+
+* a class can't anticipate the class of objects it must create
+* you just want a new instance of custom builder instead of global one
+* a class wants its subclasses to specify the objects it creates
+* classes delegate responsibility to one of several helper subclasses, and you want to localize the knowledge of which helper subclass is the delegate
+
+## Credits
+
+* [Design Pattern Reloaded by Remi Forax: ](https://www.youtube.com/watch?v=-k2X7guaArU)