PipelinR is a lightweight command processing pipeline ❍ ⇢ ❍ ⇢ ❍ for your Java awesome app.

Model to Code Processor, takes a model file and runs it through a set of velocity macros to generate JPA Entities, DAO interface and implementation, Service interface and implementation (All as very nice code). Give it a try, contribute additional templates :-)

The goal is build the response with the help of exception handling.

A simple Java-based Employee Management System that demonstrates CRUD operations using Oracle Database and JDBC Type-4 driver.

Approov service layer for Android clients using OKHttp directly

Backend en Spring Boot para gestionar dueños y mascotas con arquitectura por capas y DTOs.

Approov service layer for Android clients using HttpsUrlConnection

Aplicación de escritorio para la gestión de un taller de coches

A basic example of a service layer using Spring Boot and Hibernate

Web crawler application that collects domain statistical information and saves it to database

Approov service layer for Android clients using Retrofit

Tutorial on full-fledged backend architecture in Java

JavaSE11-ClassTask is a Java SE project for learning and practicing object-oriented programming concepts. It includes entity classes, repositories, and services for managing data like Persons and Cars. The project demonstrates the use of Lombok, singleton services, and basic CRUD operations in memory.

A Java OOP program that simulates a vending machine. The user puts in some amount of money and selects an item from a menu. If they have enough money, the user is told the change per coin and the inventory is updated. The items are stored, read and written from a text file. The program uses an MVC design pattern with a service layer and has unit…

Simple Spring REST application for blog handling

Basic Spring implementation of simple one product online shop

Um sistema de registro e gerenciamento de usuários implementado em Java com Spring Boot, utilizando H2 como banco de dados em memória. CRUD completo. ENG: A user registration and management system implemented in Java with Spring Boot, using H2 as an in-memory database. Full CRUD.

Repository focused on the study and practice of Java unit testing using JUnit 5. Includes layered architecture with services and DAOs, mock implementations, assertions, and examples of filtering and failure testing.

Spring Boot REST API for cinema room management (seats, ticketing with token, statistics). Tech: Java 17, Spring Boot 3.x, JSON, Gradle