Merge pull request #12648 from Asjad-J/master

Updated README.mds

algorithms-modules/algorithms-miscellaneous-4/README.md

@@ -11,4 +11,5 @@ This module contains articles about algorithms. Some classes of algorithms, e.g.
 - [Find the Longest Substring without Repeating Characters](https://www.baeldung.com/java-longest-substring-without-repeated-characters)
 - [Permutations of an Array in Java](https://www.baeldung.com/java-array-permutations)
 - [Find the Smallest Missing Integer in an Array](https://www.baeldung.com/java-smallest-missing-integer-in-array)
+- [Permutations of a String in Java](https://www.baeldung.com/java-string-permutations)
 - More articles: [[<-- prev]](/algorithms-miscellaneous-3) [[next -->]](/algorithms-miscellaneous-5)

algorithms-modules/algorithms-miscellaneous-7/README.md

@@ -1,3 +1,4 @@
 ### Relevant Articles:
 
+- [Algorithm to Identify and Validate a Credit Card Number](https://www.baeldung.com/java-validate-cc-number)
 - More articles: [[<-- prev]](/algorithms-miscellaneous-6)

apache-kafka-2/README.md

@@ -4,3 +4,6 @@ This module contains articles about Apache Kafka.
 
 ##### Building the project
 You can build the project from the command line using: *mvn clean install*, or in an IDE.
+
+### Relevant Articles:
+- [Guide to Check if Apache Kafka Server Is Running](https://www.baeldung.com/apache-kafka-check-server-is-running)

core-java-modules/core-java-collections-list-4/README.md

@@ -8,4 +8,5 @@ This module contains articles about the Java List collection
 - [Sort a List Alphabetically in Java](https://www.baeldung.com/java-sort-list-alphabetically)
 - [Arrays.asList() vs Collections.singletonList()](https://www.baeldung.com/java-aslist-vs-singletonlist)
 - [Replace Element at a Specific Index in a Java ArrayList](https://www.baeldung.com/java-arraylist-replace-at-index)
+- [Difference Between Arrays.asList() and List.of()](https://www.baeldung.com/java-arrays-aslist-vs-list-of)
 - [[<-- Prev]](/core-java-modules/core-java-collections-list-3)

core-java-modules/core-java-concurrency-advanced-4/README.md

@@ -8,3 +8,4 @@
 - [Acquire a Lock by a Key in Java](https://www.baeldung.com/java-acquire-lock-by-key)
 - [Differences Between set() and lazySet() in Java Atomic Variables](https://www.baeldung.com/java-atomic-set-vs-lazyset)
 - [Volatile vs. Atomic Variables in Java](https://www.baeldung.com/java-volatile-vs-atomic)
+- [What Is “Locked Ownable Synchronizers” in Thread Dump?](https://www.baeldung.com/locked-ownable-synchronizers)

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

@@ -6,3 +6,4 @@ This module contains articles about core features in the Java language
 
 - [Difference Between == and equals() in Java](https://www.baeldung.com/java-equals-method-operator-difference)
 - [Advantages and Disadvantages of Using Java Wildcard Imports](https://www.baeldung.com/java-wildcard-imports)
+- [Toggle a Boolean Variable in Java](https://www.baeldung.com/java-toggle-boolean)

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

@@ -1,3 +1,5 @@
 ### Relevant Articles:
 - [Check if a Number Is Odd or Even](https://www.baeldung.com/java-check-number-parity)
 - [How to Check Whether an Integer Exists in a Range with Java](https://www.baeldung.com/java-interval-contains-integer)
+- [Check if a Number Is Positive or Negative in Java](https://www.baeldung.com/java-check-number-positive-negative)
+- [Armstrong Numbers in Java](https://www.baeldung.com/java-armstrong-numbers)

core-java-modules/core-java-string-conversions-2/README.md

@@ -12,4 +12,5 @@ This module contains articles about string conversions from/to another type.
 - [Convert a ByteBuffer to String in Java](https://www.baeldung.com/java-bytebuffer-to-string)
 - [Convert String to Float and Back in Java](https://www.baeldung.com/java-string-to-float)
 - [Difference Between parseInt() and valueOf() in Java](https://www.baeldung.com/java-integer-parseint-vs-valueof)
+- [Integer.toString() vs String.valueOf() in Java](https://www.baeldung.com/java-tostring-valueof)
 - More articles: [[<-- prev]](/core-java-modules/core-java-string-conversions)

jackson-modules/jackson-conversions-2/README.md

@@ -12,4 +12,5 @@ This module contains articles about Jackson conversions.
 - [Jackson: java.util.LinkedHashMap cannot be cast to X](https://www.baeldung.com/jackson-linkedhashmap-cannot-be-cast)
 - [Deserialize Snake Case to Camel Case With Jackson](https://www.baeldung.com/jackson-deserialize-snake-to-camel-case)
 - [Serialize and Deserialize Booleans as Integers With Jackson](https://www.baeldung.com/jackson-booleans-as-integers)
+- [Reading JSON From a URL in Java](https://www.baeldung.com/java-read-json-from-url)
 - More articles: [[<-- prev]](../jackson-conversions)

persistence-modules/fauna/README.md

@@ -1,3 +1,4 @@
 ### Relevant Articles:
 
 - [Building a web app Using Fauna and Spring for Your First web Agency Client](https://www.baeldung.com/faunadb-spring-web-app)
+- [Building IoT Applications Using Fauna and Spring](https://www.baeldung.com/fauna-spring-building-iot-applications)

persistence-modules/spring-jdbc/README.md

@@ -5,3 +5,4 @@
 - [Spring JdbcTemplate Unit Testing](https://www.baeldung.com/spring-jdbctemplate-testing)
 - [Using a List of Values in a JdbcTemplate IN Clause](https://www.baeldung.com/spring-jdbctemplate-in-list)
 - [Obtaining Auto-generated Keys in Spring JDBC](https://www.baeldung.com/spring-jdbc-autogenerated-keys)
+- [Spring JDBC Batch Inserts](https://www.baeldung.com/spring-jdbc-batch-inserts)

persistence-modules/spring-jpa-2/README.md

@@ -6,4 +6,5 @@
 - [Transactions with Spring and JPA](https://www.baeldung.com/transaction-configuration-with-jpa-and-spring)
 - [The DAO with Spring and Hibernate](https://www.baeldung.com/persistence-layer-with-spring-and-hibernate)
 - [Simplify the DAO with Spring and Java Generics](https://www.baeldung.com/simplifying-the-data-access-layer-with-spring-and-java-generics)
+- [Multitenancy With Spring Data JPA](https://www.baeldung.com/multitenancy-with-spring-data-jpa/)
 - More articles: [[<-- prev]](/spring-jpa)

spring-boot-modules/spring-boot-swagger-2/README.md

@@ -1,2 +1,3 @@
-## Relevant Articles:
+### Relevant Articles:
 
+- [Swagger: Specify Two Responses with the Same Response Code](https://www.baeldung.com/swagger-two-responses-one-response-code)

spring-boot-modules/spring-boot-swagger/README.md

@@ -6,3 +6,4 @@
 - [Remove Basic Error Controller In SpringFox Swagger-UI](https://www.baeldung.com/spring-swagger-remove-error-controller)
 - [Setting Example and Description with Swagger](https://www.baeldung.com/swagger-set-example-description)
 - [Document Enum in Swagger](https://www.baeldung.com/swagger-enum)
+- [@ApiOperation vs @ApiResponse in Swagger](https://www.baeldung.com/swagger-apioperation-vs-apiresponse)

spring-security-modules/spring-security-pkce/README.md

@@ -0,0 +1,3 @@
+
+### Relevant Articles:
+- [PKCE Support for Secret Clients with Spring Security](https://www.baeldung.com/spring-security-pkce-secret-clients)