Java

This is a back-end, Spring Boot project, hexagonal architecture based, that tries to show my own skills and knowledge level, designing and implementing Java applications by the Spring Framework.

SQLite3 integration with Java using JDBC.

Minimal Java Socket Client and Server with Multi-Client Support.

Genetics Algorithms and Genetic Programming library. https://genetics4j.org

Server-less (decentralized) Virtual Private Network (Open-source alternative to Hamachi, Radmin, ZeroTier, etc.)

An open-source, privacy-respecting personal finance and budgeting solution.

O SPE foi desenvolvido para apoiar o gerenciamento de ponto de bolsistas e técnicos, centralizando o acesso às informações de frequência, justificativas e dados administrativos.

https://modrinth.com/plugin/coreprotect-forked

Uses inceptionV3 to detect if an image file is NSFW for JVM/Android. Supports .png, .jpg, .jpeg, .gif, and more.

PMD is an extensible multilanguage static code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It's mainly concerned with Java and Apex, but supports 16 other languages.

This component integrates the Maven PMD Plugin with Gitlab simplifying capturing a code quality report and if supplied a token it can comment on merge requests.

Contains the fundamental classes and interfaces that define the basic functionality of the SCOP framework.

A simple implementation to automate wrapping of third party libraries

Keycloak PoW Extension — adds computational PoW (proof-of-work) challenges to login, registration, and password-reset flows. Protects against bot spam and brute-force attacks by requiring clients to solve a light cryptographic puzzle before authenticating. Uses Argon2 (memory-hard, GPU-resistant) or SHA-256, with IP-adaptive difficulty that scales challenge hardness based on per-IP request patterns. Rate state is stored in Infinispan, enabling shared difficulty tracking across clustered Keycloak instances. Deploy as a standard Keycloak SPI plugin — works with any Keycloak 26.6 instance.

Three-layer defense on every submission:

Honeypot — silently rejects bots that auto-fill all form fields Solve-time validation — rejects submissions arriving faster than configured minimum (default 500ms) Hash verification — verifies proof-of-work correctness and prevents nonce replay attacks

soupcan is an unblocked games site made and developed by Me

Git/Maven/Docker assignment - Done by Amer Ghanem

Server-side of FAIVA, the FABEC Aeronautical Information VAlidator. See FAIVA.aero for more details.

The core class for SimpleSats (a lightweight, paywall project to receive Bitcoin over the Lightning Network for microservices).

本项目是一个基于Spring Boot的待办事项管理系统，支持任务的增删改查、分类、标签、优先级、状态筛选、统计分析等功能。系统支持多用户注册与登录，适合个人或小团队日常任务管理。

技术栈SpringBoot、Thymeleaf、mySQL