🔬 Java Code Coverage Library

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

Bot to convert medias in Telegram stickers

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

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.

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.

Poseidon is an invoicing solution for a laptop service center.

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

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)

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

Simple example for Spring Boot and JavaFX application

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

Myster Open Source - completely distributed p2p network

Case Study - Kubernetes Yml File Comparison (Java 25, Spring Boot, MySql, JUnit, Docker, Prometheus , Grafana, Kubernetes, Github Action (CI/CD), TestContainer, Sonarqube)

iSLDevs is a robust and flexible OAuth2 Authorization Server built with Java and Spring, supporting custom grants, JWT, and JDBC integration.

Case Study : XLSX ZIP to TXT ZIP Conversion (Java 25, Spring Boot, Apache POI, JUnit, Docker, Prometheus, Grafana, Sonarqube, Github Action (CI/CD), TestContainer, Jenkins)

A simple Airline Reservation Information Management System built in Java. This project demonstrates the use of variables, constructors, classes, and object-oriented design to track airline and passenger information. The system stores flight details, passenger details, and displays them in a structured format.