Java 11 migrate remaining e (#1112)

* Moves eip-aggregator to Java 11

* Moves eip-message-channel to Java 11

* Moves eip-publish-subscribe to Java 11

* Moves eip-splitter to Java 11

* Moves eip-wire-tap to Java 11

* Moves event-aggregator to Java 11

* Moves event-asynchronous to Java 11

* Moves event-driven-architecture to Java 11

* Moves event-queue to Java 11

* Moves event-sourcing to Java 11

* Moves execute-around to Java 11

* Moves extension-objects to Java 11

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

@@ -52,11 +52,11 @@ public class App {
    */
   public static void main(String[] args) {
 
-    EventDispatcher dispatcher = new EventDispatcher();
+    var dispatcher = new EventDispatcher();
     dispatcher.registerHandler(UserCreatedEvent.class, new UserCreatedEventHandler());
     dispatcher.registerHandler(UserUpdatedEvent.class, new UserUpdatedEventHandler());
 
-    User user = new User("iluwatar");
+    var user = new User("iluwatar");
     dispatcher.dispatch(new UserCreatedEvent(user));
     dispatcher.dispatch(new UserUpdatedEvent(user));
   }

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

@@ -44,8 +44,10 @@ public class EventDispatcher {
    * @param eventType The {@link Event} to be registered
    * @param handler   The {@link Handler} that will be handling the {@link Event}
    */
-  public <E extends Event> void registerHandler(Class<E> eventType,
-                                                Handler<E> handler) {
+  public <E extends Event> void registerHandler(
+      Class<E> eventType,
+      Handler<E> handler
+  ) {
     handlers.put(eventType, handler);
   }
 
@@ -56,7 +58,7 @@ public class EventDispatcher {
    */
   @SuppressWarnings("unchecked")
   public <E extends Event> void dispatch(E event) {
-    Handler<E> handler = (Handler<E>) handlers.get(event.getClass());
+    var handler = (Handler<E>) handlers.get(event.getClass());
     if (handler != null) {
       handler.onEvent(event);
     }