Merge pull request #12392 from Asjad-J/master

Updated README.md files

core-java-modules/core-java-9/README.md

@@ -12,3 +12,4 @@ This module contains articles about Java 9 core features
 - [Easy Ways to Write a Java InputStream to an OutputStream](https://www.baeldung.com/java-inputstream-to-outputstream)
 - [Private Methods in Java Interfaces](https://www.baeldung.com/java-interface-private-methods)
 - [Java Scanner useDelimiter with Examples](https://www.baeldung.com/java-scanner-usedelimiter)
+- [Is There a Destructor in Java?](https://www.baeldung.com/java-destructor)

core-java-modules/core-java-date-operations-2/README.md

@@ -12,4 +12,5 @@ This module contains articles about date operations in Java.
 - [Finding Leap Years in Java](https://www.baeldung.com/java-leap-year)
 - [Getting the Week Number From Any Date](https://www.baeldung.com/java-get-week-number)
 - [Subtract Days from a Date in Java](https://www.baeldung.com/java-subtract-days-from-date)
+- [How to Calculate “Time Ago” in Java](https://www.baeldung.com/java-calculate-time-ago)
 - [[<-- Prev]](/core-java-modules/core-java-date-operations-1)

persistence-modules/spring-boot-persistence-mongodb-2/README.md

@@ -2,4 +2,5 @@
 
 - [Logging MongoDB Queries with Spring Boot](https://www.baeldung.com/spring-boot-mongodb-logging)
 - [Configure MongoDB Collection Name for a Class in Spring Data](https://www.baeldung.com/spring-data-mongodb-collection-name)
+- [MongoDB Composite Key With Spring Data](https://www.baeldung.com/spring-data-mongodb-composite-key)
 - More articles: [[<--prev]](../spring-boot-persistence-mongodb)

reactor-core/README.md

@@ -11,3 +11,4 @@ This module contains articles about Reactor Core.
 - [Project Reactor: map() vs flatMap()](https://www.baeldung.com/java-reactor-map-flatmap)
 - [What Does Mono.defer() Do?](https://www.baeldung.com/java-mono-defer)
 - [Handling Exceptions in Project Reactor](https://www.baeldung.com/reactor-exceptions)
+- [Difference Between Flux.create and Flux.generate](https://www.baeldung.com/java-flux-create-generate)

spring-boot-modules/spring-boot-data-3/README.md

@@ -1 +1,2 @@
 ### Relevant Articles:
+- [Spring Data JPA – Run an App Without a Database](https://www.baeldung.com/spring-data-jpa-run-app-without-db)

spring-security-modules/spring-security-core-2/README.md

@@ -4,6 +4,7 @@ This module contains articles about core Spring Security
 
 ### Relevant Articles:
 - [Handle Spring Security Exceptions](https://www.baeldung.com/spring-security-exceptions)
+- [Handle Spring Security Exceptions With @ExceptionHandler](https://www.baeldung.com/spring-security-exceptionhandler)
 
 ### Build the Project