The J2OS Platform Handbook (Version 2.4): Building Enterprise Systems with Java and Nuxt, from the First Line to a Complete Application

This book is a complete guide to J2OS Platform version 2.4. J2OS is a modular set of 65 modules: 32 Java modules on the server side and 33 Nuxt-based modules on the client side. The book is written for readers who are just starting out and want to learn the platform module by module, without needing any other source. The book has six parts: Server infrastructure: validation, security, reporting, load balancing, file management, workflow, resource pooling, sharding, terminal access, and data pagination. Communication: message queuing, an HTTP client, email, video meetings, push notifications, and a Telegram bot. Artificial intelligence: 13 modules covering natural language processing, translation, speech, object detection, face detection, OCR, and image similarity. Data components: card, map, star, table, tree, and wizard. Vue composables: a collection of ready-made user-interface utilities. Each chapter covers one module and follows the same structure: the concepts, a first complete and runnable example, the next steps, behavior on failure with a catalog of error messages, use on the web, risky pitfalls, and practical recommendations. Every example is complete, and each one can be run as it stands. License. Version 2.3 of the platform is open source and freely available to the public. Version 2.4, which this book covers, is commercial and is released under a commercial license. Keywords: J2OS, Java, Nuxt, Vue, modular architecture, enterprise software, deep learning, programming education