#107 Improve JavaDoc for Memento example

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

@@ -4,8 +4,8 @@ import java.util.Stack;
 
 /**
  * 
- * Memento pattern is for storing and restoring object state. The object (Star)
- * gives out a "memento" (StarMemento) that contains the state of the object.
+ * Memento pattern is for storing and restoring object state. The object ({@link Star})
+ * gives out a "memento" ({@link StarMemento}) that contains the state of the object.
  * Later on the memento can be set back to the object restoring the state.
  * 
  */

memento/src/main/java/com/iluwatar/memento/StarType.java

@@ -1,5 +1,10 @@
 package com.iluwatar.memento;
 
+/**
+ * 
+ * StarType enumeration
+ *
+ */
 public enum StarType {
 
 	SUN("sun"), RED_GIANT("red giant"), WHITE_DWARF("white dwarf"), SUPERNOVA("supernova"), DEAD("dead star"), UNDEFINED("");

memento/src/test/java/com/iluwatar/memento/AppTest.java

@@ -4,6 +4,11 @@ import org.junit.Test;
 
 import com.iluwatar.memento.App;
 
+/**
+ * 
+ * Application test
+ *
+ */
 public class AppTest {
 
 	@Test