From 388bc432d902f41b54e583059603252798c3bd6a Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Thu, 21 Nov 2019 23:59:35 +0800
Subject: [PATCH] Update README.md

---
 core-java-modules/core-java-collections-list-3/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core-java-modules/core-java-collections-list-3/README.md b/core-java-modules/core-java-collections-list-3/README.md
index 3d4004de6f..65c377bd99 100644
--- a/core-java-modules/core-java-collections-list-3/README.md
+++ b/core-java-modules/core-java-collections-list-3/README.md
@@ -9,4 +9,5 @@ This module contains articles about the Java List collection
 - [List of Primitive Integer Values in Java](https://www.baeldung.com/java-list-primitive-int)
 - [Performance Comparison of Primitive Lists in Java](https://www.baeldung.com/java-list-primitive-performance)
 - [Filtering a Java Collection by a List](https://www.baeldung.com/java-filter-collection-by-list)
+- [How to Count Duplicate Elements in Arraylist](https://www.baeldung.com/java-count-duplicate-elements-arraylist)
 - [[<-- Prev]](/core-java-modules/core-java-collections-list-2)