Thread-safe Singleton class

New Singleton class name has renamed to ThreadSafeLazyLoadedIvoryTower
and called it from App.java

singleton/src/main/java/com/iluwatar/App.java

@@ -1,10 +1,10 @@
 package com.iluwatar;
 
 /**
- * 
+ *
  * Singleton pattern ensures that the class (IvoryTower) can have only one
  * existing instance and provides global access to that instance.
- * 
+ *
  */
 public class App {
 
@@ -15,5 +15,12 @@ public class App {
 		System.out.println("ivoryTower1=" + ivoryTower1);
 		System.out.println("ivoryTower2=" + ivoryTower2);
 
+		ThreadSafeLazyLoadedIvoryTower threadSafeIvoryTower1 = ThreadSafeLazyLoadedIvoryTower
+				.getInstance();
+		ThreadSafeLazyLoadedIvoryTower threadSafeIvoryTower2 = ThreadSafeLazyLoadedIvoryTower
+				.getInstance();
+		System.out.println("threadSafeIvoryTower1=" + threadSafeIvoryTower1);
+		System.out.println("threadSafeIvoryTower2=" + threadSafeIvoryTower2);
+
 	}
 }