diff --git a/core-java-modules/core-java-lang-oop-3/README.md b/core-java-modules/core-java-lang-oop-3/README.md
index 69fb4f5d28..b1ca877ae0 100644
--- a/core-java-modules/core-java-lang-oop-3/README.md
+++ b/core-java-modules/core-java-lang-oop-3/README.md
@@ -13,6 +13,4 @@ This module contains articles about Object-oriented programming (OOP) in Java
 - [A Guide to Inner Interfaces in Java](https://www.baeldung.com/java-inner-interfaces)
 - [Java Classes and Objects](https://www.baeldung.com/java-classes-objects)
 - [Java Interfaces](https://www.baeldung.com/java-interfaces)
-- [Static and Dynamic Binding in Java](https://www.baeldung.com/java-static-dynamic-binding)
-- [Methods in Java](https://www.baeldung.com/java-methods)
-- [[<-- Prev]](/core-java-modules/core-java-lang-oop-2) [[More -->]](/core-java-modules/core-java-lang-oop-4)
+- [[<-- Prev]](/core-java-modules/core-java-lang-oop-2)[[More -->]](/core-java-modules/core-java-lang-oop-4)
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-4/README.md b/core-java-modules/core-java-lang-oop-4/README.md
index fae5b3091b..51650dc1f6 100644
--- a/core-java-modules/core-java-lang-oop-4/README.md
+++ b/core-java-modules/core-java-lang-oop-4/README.md
@@ -2,5 +2,8 @@
 
 This module contains articles about Object-oriented programming (OOP) in Java
 
-### Relevant Articles:
-- [[<-- Prev]](/core-java-modules/core-java-lang-oop-3)
+### Relevant Articles: 
+- [Static and Dynamic Binding in Java](https://www.baeldung.com/java-static-dynamic-binding)
+- [Methods in Java](https://www.baeldung.com/java-methods)
+- [Java ‘private’ Access Modifier](https://www.baeldung.com/java-private-keyword)
+- [[<-- Prev]](/core-java-modules/core-java-lang-oop-3)
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/basicmethods/PersonName.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/basicmethods/PersonName.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/basicmethods/PersonName.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/basicmethods/PersonName.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/Animal.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Animal.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/Animal.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Animal.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/AnimalActivity.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/AnimalActivity.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/AnimalActivity.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/AnimalActivity.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/Cat.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Cat.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/main/java/com/baeldung/binding/Cat.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/binding/Cat.java
diff --git a/core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/Employee.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/Employee.java
similarity index 100%
rename from core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/Employee.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/Employee.java
diff --git a/core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java
similarity index 100%
rename from core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/ExampleClass.java
diff --git a/core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java b/core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java
similarity index 100%
rename from core-java-modules/core-java-lang-syntax-2/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java
rename to core-java-modules/core-java-lang-oop-4/src/main/java/com/baeldung/core/privatemodifier/PublicOuterClass.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/AnimalActivityUnitTest.java b/core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalActivityUnitTest.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/AnimalActivityUnitTest.java
rename to core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalActivityUnitTest.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/AnimalUnitTest.java b/core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalUnitTest.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/AnimalUnitTest.java
rename to core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/AnimalUnitTest.java
diff --git a/core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/CatUnitTest.java b/core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/CatUnitTest.java
similarity index 100%
rename from core-java-modules/core-java-lang-oop-3/src/test/java/com/baeldung/binding/CatUnitTest.java
rename to core-java-modules/core-java-lang-oop-4/src/test/java/com/baeldung/binding/CatUnitTest.java
diff --git a/core-java-modules/core-java-lang-syntax-2/README.md b/core-java-modules/core-java-lang-syntax-2/README.md
index 538a29181a..db81109836 100644
--- a/core-java-modules/core-java-lang-syntax-2/README.md
+++ b/core-java-modules/core-java-lang-syntax-2/README.md
@@ -4,7 +4,6 @@ This module contains articles about Java syntax
 
 ### Relevant Articles: 
 
-- [Java ‘private’ Access Modifier](https://www.baeldung.com/java-private-keyword)
 - [Guide to Java Packages](https://www.baeldung.com/java-packages)
 - [If-Else Statement in Java](https://www.baeldung.com/java-if-else)
 - [Control Structures in Java](https://www.baeldung.com/java-control-structures)
diff --git a/pom.xml b/pom.xml
index c974ba15d9..0c988457c0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -433,6 +433,7 @@
                 <module>core-java-modules/core-java-lang-oop</module>
                 <module>core-java-modules/core-java-lang-oop-2</module>
                 <module>core-java-modules/core-java-lang-oop-3</module>
+                <module>core-java-modules/core-java-lang-oop-4</module>
                 <module>core-java-modules</module>
                 <module>core-java-modules/core-java-networking</module>
                 <module>core-java-modules/core-java-perf</module>
@@ -1210,6 +1211,7 @@
                 <module>core-java-modules/core-java-lang-oop</module>
                 <module>core-java-modules/core-java-lang-oop-2</module>
                 <module>core-java-modules/core-java-lang-oop-3</module>
+                <module>core-java-modules/core-java-lang-oop-4</module>
                 <module>core-java-modules</module>
                 <module>core-java-modules/core-java-networking</module>
                 <module>core-java-modules/core-java-perf</module>