Java 11 migration: patterns (remaining b-c) (#1081)

* Moves business-delegate pattern  to java 11

* Moves bytecode pattern  to java 11

* Moves caching pattern  to java 11

* Moves callback pattern  to java 11

* Moves chain pattern  to java 11

* Moves circuit-breaker pattern  to java 11

* Moves collection-pipeline pattern  to java 11

* Moves command pattern  to java 11

* Moves commander pattern  to java 11

* Moves composite pattern  to java 11

* Corrects test cases

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

@@ -26,15 +26,12 @@ package com.iluwatar.composite;
 import org.junit.jupiter.api.Test;
 
 /**
- * 
  * Application test
- *
  */
 public class AppTest {
 
   @Test
   public void test() {
-    String[] args = {};
-    App.main(args);
+    App.main(new String[]{});
   }
 }

composite/src/test/java/com/iluwatar/composite/MessengerTest.java

@@ -72,7 +72,7 @@ public class MessengerTest {
    */
   @Test
   public void testMessageFromOrcs() {
-    final Messenger messenger = new Messenger();
+    final var messenger = new Messenger();
     testMessage(
         messenger.messageFromOrcs(),
         "Where there is a whip there is a way."
@@ -84,7 +84,7 @@ public class MessengerTest {
    */
   @Test
   public void testMessageFromElves() {
-    final Messenger messenger = new Messenger();
+    final var messenger = new Messenger();
     testMessage(
         messenger.messageFromElves(),
         "Much wind pours from your mouth."
@@ -99,7 +99,7 @@ public class MessengerTest {
    */
   private void testMessage(final LetterComposite composedMessage, final String message) {
     // Test is the composed message has the correct number of words
-    final String[] words = message.split(" ");
+    final var words = message.split(" ");
     assertNotNull(composedMessage);
     assertEquals(words.length, composedMessage.count());