diff --git a/core-java-modules/core-java-collections-3/README.md b/core-java-modules/core-java-collections-3/README.md
index 6bc9139856..4249d8ad30 100644
--- a/core-java-modules/core-java-collections-3/README.md
+++ b/core-java-modules/core-java-collections-3/README.md
@@ -11,7 +11,7 @@
 - [Performance of contains() in a HashSet vs ArrayList](https://www.baeldung.com/java-hashset-arraylist-contains-performance)
 - [Fail-Safe Iterator vs Fail-Fast Iterator](https://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
 - [Quick Guide to the Java Stack](https://www.baeldung.com/java-stack)
-- [Convert an Array of Primitives to a List](https://www.baeldung.com/java-primitive-array-to-list)
 - [A Guide to BitSet in Java](https://www.baeldung.com/java-bitset)
 - [Get the First Key and Value From a HashMap](https://www.baeldung.com/java-hashmap-get-first-entry)
 - [Performance of removeAll() in a HashSet](https://www.baeldung.com/java-hashset-removeall-performance)
+- More articles: [[<-- prev]](/core-java-modules/core-java-collections-2) [[next -->]](/core-java-modules/core-java-collections-4)
diff --git a/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/stack/StackUnitTest.java b/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/stack/StackUnitTest.java
index 6a2feff551..14eafe8924 100644
--- a/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/stack/StackUnitTest.java
+++ b/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/stack/StackUnitTest.java
@@ -1,4 +1,4 @@
-package com.baeldung.stack;
+package com.baeldung.collections.stack;
 
 import org.junit.Test;
 
diff --git a/core-java-modules/core-java-collections/README.md b/core-java-modules/core-java-collections/README.md
index 12e3c5ac17..574f61ac6a 100644
--- a/core-java-modules/core-java-collections/README.md
+++ b/core-java-modules/core-java-collections/README.md
@@ -12,4 +12,5 @@ This module contains articles about Java collections
 - [Defining a Char Stack in Java](https://www.baeldung.com/java-char-stack)
 - [Guide to the Java Queue Interface](https://www.baeldung.com/java-queue)
 - [An Introduction to Synchronized Java Collections](https://www.baeldung.com/java-synchronized-collections)
-- [[More -->]](/core-java-modules/core-java-collections-2)
+- [Convert an Array of Primitives to a List](https://www.baeldung.com/java-primitive-array-to-list)
+- More articles: [[next -->]](/core-java-modules/core-java-collections-2)
diff --git a/core-java-modules/core-java-collections/pom.xml b/core-java-modules/core-java-collections/pom.xml
index 8df0d7cdd3..eab7a35584 100644
--- a/core-java-modules/core-java-collections/pom.xml
+++ b/core-java-modules/core-java-collections/pom.xml
@@ -25,6 +25,11 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
     </dependencies>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-3/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java b/core-java-modules/core-java-collections/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java
similarity index 95%
rename from core-java-modules/core-java-collections-3/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java
rename to core-java-modules/core-java-collections/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java
index f7be99abdc..1e6efb7840 100644
--- a/core-java-modules/core-java-collections-3/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java
+++ b/core-java-modules/core-java-collections/src/main/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToList.java
@@ -1,13 +1,15 @@
-package com.baeldung.collections.iterators;
+package com.baeldung.collections.convertarrayprimitives;
 
-import java.util.List;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
-import com.google.common.primitives.Ints;
+
 import org.apache.commons.lang3.ArrayUtils;
 
+import com.google.common.primitives.Ints;
+
 public class ConvertPrimitivesArrayToList {
 
     public static void failConvert() {
diff --git a/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java b/core-java-modules/core-java-collections/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java
similarity index 87%
rename from core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java
rename to core-java-modules/core-java-collections/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java
index b773baf7d8..f9f5f8ea91 100644
--- a/core-java-modules/core-java-collections-3/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java
+++ b/core-java-modules/core-java-collections/src/test/java/com/baeldung/collections/convertarrayprimitives/ConvertPrimitivesArrayToListUnitTest.java
@@ -1,14 +1,11 @@
-package com.baeldung.collections.iterators;
-
-import java.util.List;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.stream.Collectors;
-import com.google.common.primitives.Ints;
-import org.junit.Test;
+package com.baeldung.collections.convertarrayprimitives;
 
 import static org.junit.Assert.assertEquals;
 
+import java.util.Arrays;
+
+import org.junit.Test;
+
 public class ConvertPrimitivesArrayToListUnitTest {
 
     @Test