Java 11 migrate all remaining s (#1120)

* Moves saga to Java 11

* Moves semaphore to Java 11

* Moves servant to Java 11

* Moves serverless to Java 11

* Moves service-layer to Java 11

* Moves service-locator to Java 11

* Moves sharding to Java 11

* Moves singleton to Java 11

* Moves spatial-partition to Java 11

* Moves specification to Java 11

* Moves state to Java 11

* Moves step-builder to Java 11

* Moves strategy to Java 11

* Moves subclass-sandbox to Java 11

* Fixes checkstyle issues

subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/AppTest.java

@@ -32,7 +32,6 @@ public class AppTest {
 
   @Test
   public void testMain() {
-    String[] args = {};
-    App.main(args);
+    App.main(new String[]{});
   }
 }