diff --git a/prototype/src/main/java/com/iluwatar/App.java b/prototype/src/main/java/com/iluwatar/App.java
index e94c834e3..ff3790010 100644
--- a/prototype/src/main/java/com/iluwatar/App.java
+++ b/prototype/src/main/java/com/iluwatar/App.java
@@ -1,5 +1,12 @@
 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 )
diff --git a/prototype/src/main/java/com/iluwatar/HeroFactory.java b/prototype/src/main/java/com/iluwatar/HeroFactory.java
index 1d663c77f..e7145fa88 100644
--- a/prototype/src/main/java/com/iluwatar/HeroFactory.java
+++ b/prototype/src/main/java/com/iluwatar/HeroFactory.java
@@ -1,5 +1,10 @@
 package com.iluwatar;
 
+/**
+ * 
+ * Interface for the factory class.
+ *
+ */
 public interface HeroFactory {
 
 	Mage createMage();
diff --git a/prototype/src/main/java/com/iluwatar/HeroFactoryImpl.java b/prototype/src/main/java/com/iluwatar/HeroFactoryImpl.java
index 522b3f45f..7c96fc8a5 100644
--- a/prototype/src/main/java/com/iluwatar/HeroFactoryImpl.java
+++ b/prototype/src/main/java/com/iluwatar/HeroFactoryImpl.java
@@ -1,5 +1,10 @@
 package com.iluwatar;
 
+/**
+ * 
+ * Concrete factory class.
+ *
+ */
 public class HeroFactoryImpl implements HeroFactory {
 
 	private Mage mage;