diff --git a/command/src/main/java/com/iluwatar/command/App.java b/command/src/main/java/com/iluwatar/command/App.java
index 6d9df821c..fc05afa66 100644
--- a/command/src/main/java/com/iluwatar/command/App.java
+++ b/command/src/main/java/com/iluwatar/command/App.java
@@ -3,15 +3,15 @@ package com.iluwatar.command;
 /**
  * 
  * In Command pattern actions are objects that can be executed and undone. 
- *
+ * <p>
  * Four terms always associated with the command pattern are command, receiver, invoker and client. A command 
- * object (spell) knows about receiver (target) and invokes a method of the receiver. Values for parameters of 
+ * object (spell) knows about the receiver (target) and invokes a method of the receiver. Values for parameters of 
  * the receiver method are stored in the command. The receiver then does the work. An invoker object (wizard) 
  * knows how to execute a command, and optionally does bookkeeping about the command execution. The invoker 
  * does not know anything about a concrete command, it knows only about command interface. Both an invoker object 
  * and several command objects are held by a client object (app). The client decides which commands to execute at 
  * which points. To execute a command, it passes the command object to the invoker object.
- * 
+ * <p>
  * In other words, in this example the wizard casts spells on the goblin. The wizard keeps track of the previous
  * spells cast, so it is easy to undo them. In addition, the wizard keeps track of the spells undone, so they
  * can be redone.
@@ -20,6 +20,10 @@ package com.iluwatar.command;
  */
 public class App {
 
+	/**
+	 * Program entry point
+	 * @param args command line args
+	 */
 	public static void main(String[] args) {
 		Wizard wizard = new Wizard();
 		Goblin goblin = new Goblin();
diff --git a/command/src/test/java/com/iluwatar/command/AppTest.java b/command/src/test/java/com/iluwatar/command/AppTest.java
index 454f92b63..2fd5c16b4 100644
--- a/command/src/test/java/com/iluwatar/command/AppTest.java
+++ b/command/src/test/java/com/iluwatar/command/AppTest.java
@@ -1,14 +1,19 @@
-package com.iluwatar.command;
-
-import org.junit.Test;
-
-import com.iluwatar.command.App;
-
-public class AppTest {
-
-	@Test
-	public void test() {
-		String[] args = {};
-		App.main(args);
-	}
-}
+package com.iluwatar.command;
+
+import org.junit.Test;
+
+import com.iluwatar.command.App;
+
+/**
+ * 
+ * Application test
+ *
+ */
+public class AppTest {
+
+	@Test
+	public void test() {
+		String[] args = {};
+		App.main(args);
+	}
+}