java21

A structured collection of flashcards to help you prepare for the OCP Java 21 exam (1Z0-830)

程序员技术之旅-Spring Boot 3

🛒 E-Commerce Mini Store | Spring Boot & Java backend ⚡ JWT Auth 🔐 | MySQL 💾 | REST APIs for Products, Cart & Orders 📦

Website and application made for a highschool English assignment. This project revolves around Rhetoric, and making a product related to the famous dystopian novel 1984 by George Orwell.

✅ Virtual Thread Demo

Gerencimento de consulo de veiculo desenvolvido sobre a arquitetura MVC

🍔🌱 Full-stack vegan burger restaurant platform. Features an interactive customer ordering app (dine-in/takeaway) and a real-time admin backoffice dashboard. Powered by Spring Boot 3, Angular 21, NgRx Signals, and WebSockets (STOMP). Automated CI/CD workflow deployed on AWS EC2.

Hi, I'm Himanshu Raturi! 👋 I'm a passionate backend developer with a strong focus on building secure, scalable, and efficient applications using modern technologies. With expertise in Java and Spring Boot, I specialize in creating robust RESTful APIs, implementing secure authentication systems, and designing cloud-ready architectures

A tour booking platform demonstrating identical DDD & Hexagonal Architecture implemented across Java 21, Kotlin, PHP/Symfony, Python/Django with a unified React 19 frontend.

YadinStore admin dashboard production bundle (compiled artifacts only, no source)

Notification system implemented using web socket

High-performance REST API for massive data orchestration. Built with Java & Spring Boot. Reduces operational errors by 40% via complex validation logic. 🐳

Quarkus Auth0

Enterprise Task Manager: Fullstack solution built with Java 21 (Spring Boot 3.5) and Angular 20. Implementing Hexagonal Architecture, DDD, Kafka messaging, and Prometheus observability. Fully automated with GitHub Actions.

CI/CD Jenkins avec Docker, agents dédiés et images CI versionnées (Java 21, Maven, Postman), prêtes pour un usage professionnel.

- Live Chat

Event bus and service registry for inter-application communication

Projeto de jogo de ritmo inspirado em Guitar Hero/Guitar Trainer, desenvolvido em Java com LibGDX. Este projeto foi criado como exercício de aprendizado e experimentação com IA (Codex), explorando geração de código e integração de conceitos de inteligência artificial em jogos.

Filesystem watcher for monitoring directory changes with debouncing

Control Healthy Desktop Uma solução completa para acompanhamento de saúde e hipertensão. Permite que médicos e pacientes registrem aferições e visualizem a evolução clínica através de dashboards gráficos detalhados. Projeto alinhado à ODS 3 da ONU.