🔬 Java Code Coverage Library

Jenetics - Genetic Algorithm, Genetic Programming, Grammatical Evolution, Evolutionary Algorithm, and Multi-objective Optimization

A library of useful Stream Gatherers (custom intermediate operations) for Java.

Modern Java: From Java 8 to Java 22. 现代Java案例大全/《Java核心编程》源码

Plays relaxing music in the background

Higher-Kinded-J: Unifying Composable Effects and Advanced Optics for Java

Bot to convert media into Telegram stickers

darkhold is a self-hosted alternative emulating the famous classroom quiz portal Kahoot.

Lightweight Java build tool with zero external dependencies. Compiles projects, auto-detects main classes, and generates executable JARs using pure Java 21+. Supports .zb configuration files and automatic source discovery. A simple alternative to Maven/Gradle for straightforward Java projects.

Overrun Game Library is a high-performance library implemented with Java 25, enables cross-platform access to a set of C library bindings, and provides some useful utilities.

Zero-dependency Java library for real-time currency exchange rates. Supports 165+ currencies (ISO 4217), 5 providers with automatic failover, TTL caching, and parallel queries on Java 21+ via virtual threads. Works on Java 8 through Java 25+, Android-compatible.

Spring Boot 4 and Nuxt 4 starter template

Screaming Architecture, Clean Architecture, Event-Driven Architecture, Clean Code, DDD, SOLID, Test Pyramid, Patterns (Ambassador, Circuit Breaker, Mediator, Outbox, Result, Retry, Strategy), Java 25, Spring Boot 4, Kong, Keycloak, Kafka, MongoDB, Redis, Elastic, Testcontainers, Docker

Cargotracker RegisterApp Client written in JavaFX/CDI

Poseidon is an invoicing solution for a laptop service center.

Case Study - Crypto Exchange Api (Java 25, Spring Boot, Mongodb, JUnit, Docker, Prometheus , Grafana, Kubernetes, Github Action (CI/CD), TestContainer, Jenkins, FeignClient, AOP, Mapstruct, Resilience4j, Circuit Breaker)

Case Study - Geospatial Location with Redis in Spring Boot (Java 25, Spring Boot, Redis, JUnit, Docker, Kubernetes, Github Action (CI/CD), TestContainer)

Case Study – CDC, Debezium, Kafka based Customer Notifications (Spring Boot, Java25, Kafka, Mysql, JavaMailSender, Debezium, JUnit, Docker,Testcontainer)

Discord bot that tells you when stuff is

Dev Setup for Backend Developers (macOS) - (Java25, Maven, Git, Docker, Kubernetes/kubectl, Minikube)