Merge pull request #14123 from edizor/master

Update README

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

@@ -4,4 +4,5 @@
 
 ### Relevant Articles:
 - [Introduction to Roaring Bitmap](https://www.baeldung.com/java-roaring-bitmap-intro)
+- [Creating Custom Iterator in Java](https://www.baeldung.com/java-creating-custom-iterator)
 - More articles: [[<-- prev]](/core-java-modules/core-java-collections-4)

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

@@ -6,3 +6,4 @@ This module contains articles about the Java List collection
 - [Java List Interface](https://www.baeldung.com/java-list-interface)
 - [Finding All Duplicates in a List in Java](https://www.baeldung.com/java-list-find-duplicates)
 - [Moving Items Around in an Arraylist](https://www.baeldung.com/java-arraylist-move-items)
+- [Check if a List Contains an Element From Another List in Java](https://www.baeldung.com/java-check-elements-between-lists)

core-java-modules/core-java-io-apis-2/README.md

@@ -10,3 +10,5 @@ This module contains articles about core Java input/output(IO) APIs.
 - [Difference Between FileReader and BufferedReader in Java](https://www.baeldung.com/java-filereader-vs-bufferedreader)
 - [Java: Read Multiple Inputs on Same Line](https://www.baeldung.com/java-read-multiple-inputs-same-line)
 - [Storing Java Scanner Input in an Array](https://www.baeldung.com/java-store-scanner-input-in-array)
+- [How to Take Input as String With Spaces in Java Using Scanner?](https://www.baeldung.com/java-scanner-input-with-spaces)
+- [Write Console Output to Text File in Java](https://www.baeldung.com/java-write-console-output-file)

core-java-modules/core-java-security-3/README.md

@@ -12,4 +12,5 @@ This module contains articles about core Java Security
 - [Computing an X509 Certificate’s Thumbprint in Java](https://www.baeldung.com/java-x509-certificate-thumbprint)
 - [Error: “trustAnchors parameter must be non-empty”](https://www.baeldung.com/java-trustanchors-parameter-must-be-non-empty)
 - [Common Exceptions of Crypto APIs in Java](https://www.baeldung.com/java-crypto-apis-exceptions)
+- [Hashing With Argon2 in Java](https://www.baeldung.com/java-argon2-hashing)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security-2)

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

@@ -1 +1,3 @@
+## Relevant Articles
 - [Difference Between parallelStream() and stream().parallel() in Java](https://www.baeldung.com/java-parallelstream-vs-stream-parallel)
+- [Working With Empty Stream in Java](https://www.baeldung.com/java-empty-stream)

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

@@ -0,0 +1,3 @@
+## Relevant Articles
+- [Object.toString() vs String.valueOf()](https://www.baeldung.com/java-object-tostring-vs-string-valueof)
+- [Convert String to Int Using Encapsulation](https://www.baeldung.com/java-encapsulation-convert-string-to-int)