Added book reference to singleton enum implementation.

yhwang0916 · Nov 26, 2014 · baf177a · baf177a
1 parent b73429c
commit baf177a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/singleton/src/main/java/com/iluwatar/EnumIvoryTower.java b/singleton/src/main/java/com/iluwatar/EnumIvoryTower.java
@@ -3,9 +3,11 @@
 /**
  *
  * Enum Singleton class.
+ * Effective Java 2nd Edition (Joshua Bloch) p. 18
  *
  */
 public enum EnumIvoryTower {
+
     INSTANCE;
 
     @Override