During August 2025, NareshCSE developed a core electricity billing feature in the NareshCSE/Java24CSEF repository, focusing on accurate customer invoicing. He implemented the ElectricityBill class in Java, applying basic input/output and conditional logic to compute bills from old and current meter readings. The solution introduced tiered pricing, calculating both units consumed and the final bill, and provided clear user-facing outputs. Designed with maintainability in mind, the code establishes a foundation for future billing enhancements and downstream integrations. While the work addressed a single feature without bug fixes, it demonstrated a solid grasp of core Java concepts and billing logic.