* commited initial code for hexagonal architecture
* Deleting to check in again
* Deleing to check in again
* Push first code for Hexagonal Architecture
* final code with UT for JSON to Java conversion
* removed hexagonal-architecture code from last commit
* BEL-5071 updated README
* BAEL-5071: Undo README changes and added a nested object in the JSON example.
* BAEL-5071: fixed whitespace/indentation in JsonToJavaClassConversion.java
* BAEL-5151: Added code for getting the first of a String
* BAEL-5151: Renamed Unit Test
* BAEL-5151: Moved the files from core-java-string-operations to core-java-string-operations-3
* BAEL-5151: Replaced tabs with white spaces.
* BAEL-5228: Adding code for approaches to concatening null string in java
* BAEL-5228: Moved file to correct folder and added a UT.
* BAEL-5228: corrected import statements.
* BAEL-5228: corrected last commit.
* BAEL-5228: removed extra import.
* BAEL-5228: renamed UT
* BAEL-5280: added code for ArrayIndexOutOfBoundsException.
* BAEL-5280: moved code for ArrayIndexOutOfBoundsException in a new module.
* BAEL-5280: Fixed tab/spaces in pom.xml.
* BAEL-5280: Fixed indentation in ArrayIndexOutOfBoundsExceptionDemoUnitTest.java.
Co-authored-by: Vaibhav Jain <vaibhav.ashokjain@vodafone.com>