diff --git a/java-strings-2/README.md b/java-strings-2/README.md
index 55760bfac7..ad0a46fd96 100644
--- a/java-strings-2/README.md
+++ b/java-strings-2/README.md
@@ -23,3 +23,4 @@
 - [Java Multi-line String](https://www.baeldung.com/java-multiline-string)
 - [Checking If a String Is a Repeated Substring](https://www.baeldung.com/java-repeated-substring)
 - [How to Reverse a String in Java](https://www.baeldung.com/java-reverse-string)
+- [String toLowerCase and toUpperCase Methods in Java](https://www.baeldung.com/java-string-convert-case)