#113 Event Driven Architecture

Adds more Javadoc

event-driven-architecture/src/main/java/com/iluwatar/eda/event/Event.java

@@ -2,8 +2,25 @@ package com.iluwatar.eda.event;
 
 import com.iluwatar.eda.framework.Message;
 
+/**
+ * The {@link Event} class serves as a base class for defining custom events happening with your
+ * system. In this example we have two types of events defined.
+ * <ul>
+ *   <li>{@link UserCreatedEvent} - used when a user is created</li>
+ *   <li>{@link UserUpdatedEvent} - used when a user is updated</li>
+ * </ul>
+ * Events can be distinguished using the {@link #getType() getType} method.
+ */
 public class Event implements Message {
-    public Class<? extends Message> getType() {
-        return getClass();
-    }
+
+  /**
+   * Returns the event type as a {@link Class} object
+   * In this example, this method is used by the {@link com.iluwatar.eda.EventDispatcher} to
+   * dispatch events depending on their type.
+   *
+   * @return the Event type as a {@link Class}.
+   */
+  public Class<? extends Message> getType() {
+    return getClass();
+  }
 }