Merge pull request iluwatar#702 from zafarella/patch-4

iluwatar · web-flow · commit 33a3d6fef4ee · 2018-01-23T23:24:39.000+02:00
Add thread safety comment on enum based singleton
diff --git a/singleton/src/main/java/com/iluwatar/singleton/EnumIvoryTower.java b/singleton/src/main/java/com/iluwatar/singleton/EnumIvoryTower.java
@@ -24,6 +24,9 @@
 
 /**
  * Enum based singleton implementation. Effective Java 2nd Edition (Joshua Bloch) p. 18
+ *
+ * This implementation is thread safe, however adding any other method and its thread safety
+ * is developers responsibility.
  */
 public enum EnumIvoryTower {
 
