* adding a generic core-java-exceptions module for number format excpetion and other java exceptions in future
* Update core-java-modules/core-java-exceptions/pom.xml
Co-Authored-By: abhijoyful <abhijoyful@gmail.com>
* add core-java-exceptions module in core-java-module pom
* replace tab with whitespaces
* cleanup code (refactor junit class name per convention, format code, remove blank javadoc)
* rename unit test class per convention to fix build failure