Merge pull request #16472 from rcalago/master

Update on README.md

core-java-modules/core-java-8-datetime-3/README.md

@@ -5,4 +5,5 @@
 - [Check if Two Date Ranges Overlap](https://www.baeldung.com/java-check-two-date-ranges-overlap)
 - [Difference between ZoneOffset.UTC and ZoneId.of(“UTC”)](https://www.baeldung.com/java-zoneoffset-utc-zoneid-of)
 - [Check if a Given Time Lies Between Two Times Regardless of Date](https://www.baeldung.com/java-check-between-two-times)
+- [Convert String to OffsetDateTime](https://www.baeldung.com/java-convert-string-offsetdatetime)
 - [[<-- Prev]](/core-java-modules/core-java-8-datetime-2)

core-java-modules/core-java-io-5/README.md

@@ -13,5 +13,6 @@ This module contains articles about core Java input and output (IO)
 - [Reading a .gz File Line by Line Using GZIPInputStream](https://www.baeldung.com/java-gzipinputstream-read-gz-file-line-by-line)
 - [Opening HTML File Using Java](https://www.baeldung.com/java-open-html-file)
 - [PrintWriter write() vs print() Method in Java](https://www.baeldung.com/java-printwriter-write-vs-print)
+- [Compress and Create a Byte Array Using GZip](https://www.baeldung.com/java-gzip-compress-create-byte-array)
 - [[<-- Prev]](/core-java-modules/core-java-io-4)
 

core-java-modules/core-java-string-conversions-3/README.md

@@ -6,3 +6,4 @@
 - [How to Convert an Object to String](https://www.baeldung.com/java-object-string-representation)
 - [Convert String to long or Long in Java](https://www.baeldung.com/java-convert-string-long)
 - [Convert a String to a List of Characters in Java](https://www.baeldung.com/java-convert-string-list-characters)
+- [Difference Between Casting to String and String.valueOf()](https://www.baeldung.com/java-string-cast-vs-valueof)

libraries-io/README.md

@@ -5,3 +5,4 @@
 - [How to Create Password-Protected Zip Files and Unzip Them in Java](https://www.baeldung.com/java-password-protected-zip-unzip)
 - [How to Create CSV File from POJO with Custom Column Headers and Positions](https://www.baeldung.com/java-create-csv-pojo-customize-columns)
 - [Delete a Directory Recursively in Java](https://www.baeldung.com/java-delete-directory)
+- [Introduction to Simple Java Mail](https://www.baeldung.com/java-sjm-email)

patterns-modules/design-patterns-creational-2/README.md

@@ -2,3 +2,4 @@
 - [The Factory Design Pattern in Java](https://www.baeldung.com/java-factory-pattern)
 - [Drawbacks of the Singleton Design Pattern](https://www.baeldung.com/java-patterns-singleton-cons)
 - [Builder Pattern and Inheritance](https://www.baeldung.com/java-builder-pattern-inheritance)
+- [Implement the Builder Pattern in Java 8](https://www.baeldung.com/java-builder-pattern)

persistence-modules/spring-data-jpa-query-4/README.md

@@ -1,2 +1,3 @@
 ### Relevant Articles
 - [Querying JSONB Columns Using Spring Data JPA](https://www.baeldung.com/spring-data-jpa-querying-jsonb-columns)
+- [Implement Update-Or-Insert in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-update-or-insert)

persistence-modules/spring-data-jpa-repo-4/README.md

@@ -7,4 +7,5 @@
 - [When to Use the getReferenceById() and findById() Methods in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-getreferencebyid-findbyid-methods)
 - [Implementing Persistable-Only Entities in Spring Data JPA](https://www.baeldung.com/spring-data-persistable-only-entities)
 - [Storing PostgreSQL JSONB Using Spring Boot and JPA](https://www.baeldung.com/spring-boot-jpa-storing-postgresql-jsonb)
+- [“Not a Managed Type” Exception in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-not-managed-type-exception)
 - More articles: [[<-- prev]](../spring-data-jpa-repo-3)