#12 Added private constructor to ThreadSafeLazyLoadedIvoryTower.

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

@@ -8,6 +8,9 @@ package com.iluwatar;
 public class ThreadSafeLazyLoadedIvoryTower {
 
 	private static ThreadSafeLazyLoadedIvoryTower instance = null;
+	
+	private ThreadSafeLazyLoadedIvoryTower() {
+	}
 
 	public synchronized static ThreadSafeLazyLoadedIvoryTower getInstance() {
 		/*