Formatted all files to the same standard

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

@@ -5,9 +5,8 @@ import java.util.List;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 
-
 public class Inventory {
-	
+
 	private int inventorySize;
 	private List<Item> items;
 	private Lock lock = new ReentrantLock();
@@ -16,17 +15,17 @@ public class Inventory {
 		this.inventorySize = inventorySize;
 		this.items = new ArrayList<Item>(inventorySize);
 	}
-	
-	public boolean addItem(Item item){
-		if(items.size()<inventorySize){
+
+	public boolean addItem(Item item) {
+		if (items.size() < inventorySize) {
 			lock.lock();
-			try{
-				if(items.size()<inventorySize){
+			try {
+				if (items.size() < inventorySize) {
 					items.add(item);
 					System.out.println(Thread.currentThread());
 					return true;
 				}
-			}finally{
+			} finally {
 				lock.unlock();
 			}
 		}