Commented prototype example.

prototype/src/main/java/com/iluwatar/App.java

 package com.iluwatar;
 
+/**
+ * 
+ * In Prototype we have a factory class (HeroFactoryImpl) producing
+ * objects by cloning existing ones. In this example the factory's
+ * prototype objects are given as constructor parameters.
+ *
+ */
 public class App 
 {
     public static void main( String[] args )

prototype/src/main/java/com/iluwatar/HeroFactory.java

 package com.iluwatar;
 
+/**
+ * 
+ * Interface for the factory class.
+ *
+ */
 public interface HeroFactory {
 
 	Mage createMage();

prototype/src/main/java/com/iluwatar/HeroFactoryImpl.java

 package com.iluwatar;
 
+/**
+ * 
+ * Concrete factory class.
+ *
+ */
 public class HeroFactoryImpl implements HeroFactory {
 
 	private Mage mage;