Java 11 migrate c-d (remaining) (#1111)

* Moves converter pattern to Java 11

* Moves cqrs pattern to Java 11

* Moves dao pattern to Java 11

* Moves data-bus pattern to Java 11

* Moves data-locality pattern to Java 11

* Moves data-mapper pattern to Java 11

* Moves data-transfer-object pattern to Java 11

* Moves decorator pattern to Java 11

* Moves delegation pattern to Java 11

* Moves dependency-injection to Java 11

* Moves dirty-flag to Java 11

* Moves double-buffer to Java 11

* Moves double-checked-locking to Java 11

* Moves double-dispatch to Java 11

* Corrects with changes thats breaking test cases

double-dispatch/src/test/java/com/iluwatar/doubledispatch/RectangleTest.java

@@ -23,12 +23,12 @@
 
 package com.iluwatar.doubledispatch;
 
-import org.junit.jupiter.api.Test;
-
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import org.junit.jupiter.api.Test;
+
 /**
  * Unit test for Rectangle
  */
@@ -39,7 +39,7 @@ public class RectangleTest {
    */
   @Test
   public void testConstructor() {
-    final Rectangle rectangle = new Rectangle(1, 2, 3, 4);
+    final var rectangle = new Rectangle(1, 2, 3, 4);
     assertEquals(1, rectangle.getLeft());
     assertEquals(2, rectangle.getTop());
     assertEquals(3, rectangle.getRight());
@@ -52,7 +52,7 @@ public class RectangleTest {
    */
   @Test
   public void testToString() throws Exception {
-    final Rectangle rectangle = new Rectangle(1, 2, 3, 4);
+    final var rectangle = new Rectangle(1, 2, 3, 4);
     assertEquals("[1,2,3,4]", rectangle.toString());
   }