From 9a0bb6b0fe8670fb0d654696c65a5c9188baa296 Mon Sep 17 00:00:00 2001
From: Ilkka Seppala <iluwatar@gmail.com>
Date: Sun, 31 Aug 2014 11:35:08 +0300
Subject: [PATCH] Added comments for the visitor example.

---
 visitor/src/main/java/com/iluwatar/App.java         | 7 +++++++
 visitor/src/main/java/com/iluwatar/Unit.java        | 5 +++++
 visitor/src/main/java/com/iluwatar/UnitVisitor.java | 5 +++++
 3 files changed, 17 insertions(+)

diff --git a/visitor/src/main/java/com/iluwatar/App.java b/visitor/src/main/java/com/iluwatar/App.java
index 1bf7cbf26..1de762fff 100644
--- a/visitor/src/main/java/com/iluwatar/App.java
+++ b/visitor/src/main/java/com/iluwatar/App.java
@@ -1,5 +1,12 @@
 package com.iluwatar;
 
+/**
+ * 
+ * Visitor pattern defines mechanism to apply operations
+ * (UnitVisitor) on nodes (Unit) in hierarchy. New operations 
+ * can be added without altering the node interface.
+ *
+ */
 public class App 
 {
     public static void main( String[] args )
diff --git a/visitor/src/main/java/com/iluwatar/Unit.java b/visitor/src/main/java/com/iluwatar/Unit.java
index df77a9776..32cc93ed3 100644
--- a/visitor/src/main/java/com/iluwatar/Unit.java
+++ b/visitor/src/main/java/com/iluwatar/Unit.java
@@ -1,5 +1,10 @@
 package com.iluwatar;
 
+/**
+ *
+ * Interface for the nodes in hierarchy.
+ * 
+ */
 public abstract class Unit {
 
 	private Unit[] children;
diff --git a/visitor/src/main/java/com/iluwatar/UnitVisitor.java b/visitor/src/main/java/com/iluwatar/UnitVisitor.java
index dd55508c1..298b9f8cb 100644
--- a/visitor/src/main/java/com/iluwatar/UnitVisitor.java
+++ b/visitor/src/main/java/com/iluwatar/UnitVisitor.java
@@ -1,5 +1,10 @@
 package com.iluwatar;
 
+/**
+ * 
+ * Visitor interface.
+ *
+ */
 public interface UnitVisitor {
 
 	void visitSoldier(Soldier soldier);