Eliza Ana developed a parity-check utility for the MamaSonya/Coding-tasksB37gr4 repository, focusing on numeric validation in Java. She implemented the Odd_or_Even class with a static identify method that determines whether an integer is odd or even, and included a main method to demonstrate its usage from the command line. Her approach emphasized clear object-oriented design and forward compatibility, as she added a placeholder to capture future implementation requirements. While the work was limited to a single feature over one month, Eliza maintained clear commit documentation, ensuring traceability and laying a foundation for future enhancements using core Java skills.