* BAEL-5678 - Creating Random Numbers With No Duplicates in Java
Ready for review.
* BAEL-5678 - review
* using `isEmpty()` for `hasNext()`;
* using `assertEquals` instead of `assertTrue`;
* Check if a number is positive or negative in Java
* reformat single line if/else statements
* Check if a number is positive or negative in Java
* [positiveOrNegative] using compareTo() instead of == to compare float numbers
* [positiveOrNegative] re-org imports
