Java 11 migrate remaining (g,h,i) (#1116)

* Moves game-loop to Java 11

* Moves guarded-suspension to Java 11

* Moves half-sync-half-async to Java 11

* Moves hexagonal to Java 11

* Moves intercepting-filter to Java 11

* Moves interpreter to Java 11

* Moves iterator to Java 11

game-loop/src/main/java/com/iluwatar/gameloop/GameLoop.java

@@ -70,7 +70,7 @@ public abstract class GameLoop {
    * @return {@code true} if the game is running.
    */
   public boolean isGameRunning() {
-    return status == GameStatus.RUNNING ? true : false;
+    return status == GameStatus.RUNNING;
   }
 
   /**
@@ -80,7 +80,7 @@ public abstract class GameLoop {
    */
   protected void processInput() {
     try {
-      int lag = new Random().nextInt(200) + 50;
+      var lag = new Random().nextInt(200) + 50;
       Thread.sleep(lag);
     } catch (InterruptedException e) {
       logger.error(e.getMessage());

game-loop/src/test/java/com/iluwatar/gameloop/AppTest.java

@@ -32,8 +32,7 @@ public class AppTest {
 
   @Test
   public void testMain() {
-    String[] args = {};
-    new App().main(args);
+    new App().main(new String[]{});
   }
 
 }

game-loop/src/test/java/com/iluwatar/gameloop/GameLoopTest.java

@@ -65,7 +65,7 @@ public class GameLoopTest {
 
   @Test
   public void testIsGameRunning() {
-    Assert.assertEquals(false, gameLoop.isGameRunning());
+    Assert.assertFalse(gameLoop.isGameRunning());
   }
 
 }