Formatted all files to the same standard

double-checked-locking/src/main/java/com/iluwatar/App.java

@@ -4,7 +4,7 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 /**
- *
+ * 
  * In Inventory we store the items with a given size. However, we do not store
  * more items than the inventory size. To address concurrent access problems we
  * use double checked locking to add item to inventory. In this method, the
@@ -12,16 +12,17 @@ import java.util.concurrent.Executors;
  */
 public class App {
 
-    public static void main(String[] args) {
-        final Inventory inventory = new Inventory(1000);
-        ExecutorService executorService = Executors.newFixedThreadPool(3);
-        for (int i = 0; i < 3; i++) {
-            executorService.execute(new Runnable() {
-                @Override
-                public void run() {
-                    while (inventory.addItem(new Item()));
-                }
-            });
-        }
-    }
+	public static void main(String[] args) {
+		final Inventory inventory = new Inventory(1000);
+		ExecutorService executorService = Executors.newFixedThreadPool(3);
+		for (int i = 0; i < 3; i++) {
+			executorService.execute(new Runnable() {
+				@Override
+				public void run() {
+					while (inventory.addItem(new Item()))
+						;
+				}
+			});
+		}
+	}
 }