GitHub

ShopSphere Backend — Spring Boot Microservices with PostgreSQL and Kafka

ShopSphere Backend is a hands-on Java and Spring Boot learning project for understanding microservices, API gateways, REST APIs, PostgreSQL persistence, Kafka events, request tracing, and ...
GitHub

Trail Guide — Camping & Survival AI Assistant

A 3D-animated AI virtual assistant that helps users plan camping trips, stay safe outdoors, and get quick answers on packing, campsite setup, navigation, and emergency basics — built for the AI ...

From 650k to 850k JPY in a Java 8 Legacy Environment: A True Story of Proposing 'Observability' to Transform the Workplace

Hello! This is the "Java Career Research Institute". We provide practical know-how to help Java engineers get properly ...

For Beginners Who Cannot Read Java Code | How to Follow Along Using 5 Points: Input, Calls, Branching, and Return Values

Even after learning the basics of Java syntax, you may feel like you don't know where to start when you open actual code. The ...