Work on iluwatar#184, changed category, added difficulty tag, more real applications and credits, added implementation approaches

Author: npathai

fluentinterface/index.md

@@ -3,14 +3,25 @@ layout: pattern
 title: Fluent Interface
 folder: fluentinterface
 permalink: /patterns/fluentinterface/
-categories: Architectural
-tags: Java
+categories: Other
+tags: 
+ - Java
+ - Difficulty-Intermediate
 ---
 
 **Intent:** A fluent interface provides an easy-readable, flowing interface, that often mimics a domain specific language. Using this pattern results in code that can be read nearly as human language.
 
+**Implementation:**
+
+A fluent interface can be implemented using any of
+ 
+ * Method Chaining - calling a method returns some object on which further methods can be called.
+ * Static Factory Methods and Imports
+ * Named parameters - can be simulated in Java using static factory methods.
+
 ![Fluent Interface](./etc/fluentinterface.png "Fluent Interface")
 
+
 **Applicability:** Use the Fluent Interface pattern when
 
 * you provide an API that would benefit from a DSL-like usage
@@ -20,9 +31,12 @@ tags: Java
 
 * [Java 8 Stream API](http://www.oracle.com/technetwork/articles/java/ma14-java-se-8-streams-2177646.html)
 * [Google Guava FluentInterable](https://github.com/google/guava/wiki/FunctionalExplained)
-* [JOOQ](http://www.jooq.org/doc/3.0/manual/getting-started/use-cases/jooq-as-a-standalone-sql-builder/)
-
-**Credits**
-
-* [Fluent Interface - Martin Fowler](http://www.martinfowler.com/bliki/FluentInterface.html)
-* [Evolutionary architecture and emergent design: Fluent interfaces - Neal Ford](http://www.ibm.com/developerworks/library/j-eaed14/)
+* [JOOQ](http://www.jooq.org/doc/3.0/manual/getting-started/use-cases/jooq-as-a-standalone-sql-builder/)
+* [Mockito](http://mockito.org/)
+* [Java Hamcrest](http://code.google.com/p/hamcrest/wiki/Tutorial)
+
+**Credits**
+
+* [Fluent Interface - Martin Fowler](http://www.martinfowler.com/bliki/FluentInterface.html)
+* [Evolutionary architecture and emergent design: Fluent interfaces - Neal Ford](http://www.ibm.com/developerworks/library/j-eaed14/)
+* [Internal DSL](http://www.infoq.com/articles/internal-dsls-java)