https://chcha.in/tags/java/Recent content in Java on Dev PortfolioHugoen-usMon, 29 Dec 2025 00:00:00 +0000https://chcha.in/opensource/kestra-npe-fix/Mon, 29 Dec 2025 00:00:00 +0000https://chcha.in/opensource/kestra-npe-fix/Fixed a NullPointerException in the SetVariables task when overwrite: false is used. The task assumed execution.getVariables() was non-null and attempted to call containsKey(...), which caused a crash for webhook-triggered executions. The fix defensively initializes a local variables map before performing duplicate checks and merges, preserving existing behavior while preventing the NPE.https://chcha.in/projects/food-ordering-system/Sat, 01 Nov 2025 00:00:00 +0000https://chcha.in/projects/food-ordering-system/Overview Food Ordering System is a robust Spring Boot application designed to manage restaurant orders with enterprise-grade security and scalability. It features a complete ecosystem for users, restaurant owners, and delivery management. Key Features 🔐 Enterprise Security: Implementation of JWT Authentication with Spring Security and BCrypt password encryption 👤 Role-Based Access (RBAC): Distinct panels for Users and Hotel Managers with strict resource ownership validation 🛒 Order Processing: Atomic transaction management for reliable order handling and status tracking 🏨 Restaurant Management: Complete CRUD operations for restaurants, menus, and image handling 📊 Enterprise Logging: Structured logging with AOP (Aspect-Oriented Programming) integration Project Architecture Backend Layer: Layered architecture (Controller → Service → Repository → Entity) ensuring separation of concerns Security Flow: Request -> JWT Filter -> Spring Security Context -> Protected Resource Frontend Integration: Built with Vue.