Merge pull request #13111 from edizor/master

Update README

core-java-modules/core-java-collections-maps-5/README.md

@@ -9,4 +9,5 @@
 - [Java IdentityHashMap Class and Its Use Cases](https://www.baeldung.com/java-identityhashmap)
 - [How to Invert a Map in Java](https://www.baeldung.com/java-invert-map)
 - [Implementing a Map with Multiple Keys in Java](https://www.baeldung.com/java-multiple-keys-map)
+- [Difference Between Map.ofEntries() and Map.of()](https://www.baeldung.com/map-ofentries-and-map-of)
 - More articles: [[<-- prev]](../core-java-collections-maps-4)

core-java-modules/core-java-datetime-conversion/README.md

@@ -7,3 +7,4 @@ This module contains articles about converting between Java date and time object
 - [Convert Time to Milliseconds in Java](https://www.baeldung.com/java-time-milliseconds)
 - [Convert Date to LocalDate or LocalDateTime and Back](http://www.baeldung.com/java-date-to-localdate-and-localdatetime)
 - [Convert Between java.time.Instant and java.sql.Timestamp](https://www.baeldung.com/java-time-instant-to-java-sql-timestamp)
+- [Convert Between LocalDateTime and ZonedDateTime](https://www.baeldung.com/java-localdatetime-zoneddatetime)

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

@@ -10,3 +10,4 @@ This module contains articles about Java Optional.
 - [Java 9 Optional API Additions](https://www.baeldung.com/java-9-optional)
 - [Throw Exception in Optional in Java 8](https://www.baeldung.com/java-optional-throw-exception)
 - [Optional orElse Optional](https://www.baeldung.com/java-optional-or-else-optional)
+- [Uses for Optional in Java](https://www.baeldung.com/java-optional-uses)

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

@@ -8,3 +8,4 @@ This module contains articles about string-related algorithms.
 - [Check if Two Strings are Anagrams in Java](https://www.baeldung.com/java-strings-anagrams)
 - [Email Validation in Java](https://www.baeldung.com/java-email-validation-regex)
 - [Check if the First Letter of a String is Uppercase](https://www.baeldung.com/java-check-first-letter-uppercase)
+- [Find the First Non Repeating Character in a String in Java](https://www.baeldung.com/java-find-the-first-non-repeating-character)

lombok-modules/lombok-2/README.md

@@ -8,4 +8,5 @@ This module contains articles about Project Lombok.
 - [Declaring Val and Var Variables in Lombok](https://www.baeldung.com/java-lombok-val-var)
 - [Lombok Using @With Annotations](https://www.baeldung.com/lombok-with-annotations)
 - [Lombok’s @ToString Annotation](https://www.baeldung.com/lombok-tostring)
+- [Jackson’s Deserialization With Lombok](https://www.baeldung.com/java-jackson-deserialization-lombok)
 - More articles: [[<-- prev]](../lombok)

patterns-modules/design-patterns-singleton/README.md

@@ -1 +1,2 @@
 ### Relevant Articles:
+- [How to Serialize a Singleton in Java](https://www.baeldung.com/java-serialize-singleton)

spring-boot-modules/spring-boot-request-params/README.md

@@ -3,3 +3,4 @@
 This module contains articles about Spring Boot Request Params
 
 ### Relevant Articles:
+- [Enum Mapping in Spring Boot](https://www.baeldung.com/spring-boot-enum-mapping)

spring-cloud-modules/spring-cloud-config/README.md

@@ -1,2 +1,3 @@
 ### Relevant Articles:
 - [Quick Intro to Spring Cloud Configuration](http://www.baeldung.com/spring-cloud-configuration)
+- [Overriding the Values of Remote Properties in Spring Cloud Config](https://www.baeldung.com/spring-cloud-config-remote-properties-override)

spring-reactive-modules/spring-5-reactive-3/README.md

@@ -4,4 +4,5 @@ This module contains articles about reactive Spring 5.
 
 - [Logging a Reactive Sequence](https://www.baeldung.com/spring-reactive-sequence-logging)
 - [Reading Flux Into a Single InputStream Using Spring Reactive WebClient](https://www.baeldung.com/spring-reactive-read-flux-into-inputstream)
+- [Spring Boot FeignClient vs. WebClient](https://www.baeldung.com/spring-boot-feignclient-vs-webclient)
 - More articles: [[<-- prev]](../spring-5-reactive-2)

tablesaw/README.md

@@ -1,5 +1,5 @@
 This module contains tutorials related to the tablesaw java library.
 
 ### Relevant Articles:
-
+- [Working with Tabular Data Using Tablesaw](https://www.baeldung.com/tablesaw)