From c49c7f57a31a1885081762063e854e762b64f59a Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Wed, 11 Nov 2020 21:18:12 +0800
Subject: [PATCH] Update README.md

---
 core-java-modules/core-java-lang-oop-types/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core-java-modules/core-java-lang-oop-types/README.md b/core-java-modules/core-java-lang-oop-types/README.md
index 459352c490..6c649877b3 100644
--- a/core-java-modules/core-java-lang-oop-types/README.md
+++ b/core-java-modules/core-java-lang-oop-types/README.md
@@ -12,3 +12,4 @@ This module contains articles about types in Java
 - [Attaching Values to Java Enum](https://www.baeldung.com/java-enum-values)
 - [A Guide to Java Enums](https://www.baeldung.com/a-guide-to-java-enums)
 - [Determine if an Object is of Primitive Type](https://www.baeldung.com/java-object-primitive-type)
+- [Extending Enums in Java](https://www.baeldung.com/java-extending-enums)