Merge pull request #15377 from edizor/master

Update README

core-java-modules/core-java-arrays-convert/README.md

@@ -11,3 +11,4 @@ This module contains articles about arrays conversion in Java
 - [Converting an int[] to HashSet in Java](https://www.baeldung.com/java-converting-int-array-to-hashset)
 - [Convert an ArrayList of String to a String Array in Java](https://www.baeldung.com/java-convert-string-arraylist-array)
 - [Convert Char Array to Int Array in Java](https://www.baeldung.com/java-convert-char-int-array)
+- [How to Convert Byte Array to Char Array](https://www.baeldung.com/java-convert-byte-array-char)

core-java-modules/core-java-lang-operators-2/README.md

@@ -10,3 +10,4 @@ This module contains articles about Java operators
 - [Check if at Least Two Out of Three Booleans Are True in Java](https://www.baeldung.com/java-check-two-of-three-booleans)
 - [Alternatives for instanceof Operator in Java](https://www.baeldung.com/java-instanceof-alternatives)
 - [What Does “––>” Mean in Java?](https://www.baeldung.com/java-minus-minus-greaterthan)
+- [All the Ways Java Uses the Colon Character](https://www.baeldung.com/java-colon)

core-java-modules/core-java-numbers-7/README.md

@@ -0,0 +1,2 @@
+## Relevant Articles
+- [Check if a double Is an Integer in Java](https://www.baeldung.com/java-check-double-integer)

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

@@ -4,3 +4,5 @@
 - [Convert int to Long in Java](https://www.baeldung.com/java-convert-int-long)
 - [How To Convert Double To Float In Java](https://www.baeldung.com/java-convert-double-float)
 - [Converting from float to BigDecimal in Java](https://www.baeldung.com/java-convert-float-bigdecimal)
+- [Convert Positive Integer to Negative and Vice Versa in Java](https://www.baeldung.com/java-negating-integer)
+- [Rounding Up a Number to Nearest Multiple of 5 in Java](https://www.baeldung.com/java-round-nearest-multiple-five)

json-modules/gson-2/README.md

@@ -5,4 +5,4 @@ This module contains articles about Gson
 ### Relevant Articles: 
 - [Solving Gson Parsing Errors](https://www.baeldung.com/gson-parsing-errors)
 - [Difference between Gson @Expose and @SerializedName](https://www.baeldung.com/gson-expose-vs-serializedname)
-
+- [Resolving Gson’s “Multiple JSON Fields” Exception](https://www.baeldung.com/java-gson-multiple-json-fields-exception)

json-modules/json/README.md

@@ -12,4 +12,5 @@ This module contains articles about JSON.
 - [Iterating Over an Instance of org.json.JSONObject](https://www.baeldung.com/jsonobject-iteration)
 - [Escape JSON String in Java](https://www.baeldung.com/java-json-escaping)
 - [Reducing JSON Data Size](https://www.baeldung.com/json-reduce-data-size)
+- [How to Convert JsonNode to ObjectNode](https://www.baeldung.com/java-jackson-jsonnode-objectnode)
 - More Articles: [[next -->]](../json-2)

persistence-modules/java-harperdb/README.md

@@ -0,0 +1,2 @@
+## Relevant Articles
+- [Working With HarperDB and Java](https://www.baeldung.com/java-harperdb)

static-analysis/README.md

@@ -6,3 +6,4 @@ This module contains articles about static program analysis
 
 - [Introduction to PMD](https://www.baeldung.com/pmd)
 - [Java Static Analysis Tools in Eclipse and IntelliJ IDEA](https://www.baeldung.com/java-static-analysis-tools)
+- [Catch Common Mistakes with Error Prone Library in Java](https://www.baeldung.com/java-error-prone-library)

xml/README.md

@@ -13,3 +13,4 @@ This module contains articles about eXtensible Markup Language (XML)
 - [Parsing an XML File Using StAX](https://www.baeldung.com/java-stax)
 - [Parsing an XML File Using SAX Parser](https://www.baeldung.com/java-sax-parser)
 - [Remove HTML Tags Using Java](https://www.baeldung.com/java-remove-html-tags)
+- [Convert an XML File to CSV File](https://www.baeldung.com/java-convert-xml-csv)