From 178e3aa0f26cee2c68e97cc63ec4ff6ec40cbd2d Mon Sep 17 00:00:00 2001
From: collaboratewithakash
 <38683470+collaboratewithakash@users.noreply.github.com>
Date: Mon, 4 Mar 2019 16:54:04 +0530
Subject: [PATCH] Back-link added

---
 core-java-collections/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core-java-collections/README.md b/core-java-collections/README.md
index 710be31a08..80d4385c45 100644
--- a/core-java-collections/README.md
+++ b/core-java-collections/README.md
@@ -32,3 +32,4 @@
 - [A Guide to Iterator in Java](http://www.baeldung.com/java-iterator)
 - [Differences Between HashMap and Hashtable](https://www.baeldung.com/hashmap-hashtable-differences)
 - [Java ArrayList vs Vector](https://www.baeldung.com/java-arraylist-vs-vector)
+- [Defining a Char Stack in Java](https://www.baeldung.com/java-char-stack)