All Algorithms implemented in Java

Getting Started with Spring Boot 3:

QuestDB is a high performance, open-source, time-series database

Code for Head First Design Patterns book (2020)

Exercism exercises in Java.

AR Copy Paste - Text Proto

Code for Head First Java

Mario written using LWJGL and Jade: for Youtube series https://www.youtube.com/watch?v=VyKE7vz65rY&list=PLtrSb4XxIVbp8AKuEAlwNXDxr99e3woGE

Java restful service tutorial

Piwigo Native Android App

Spring Boot Java app to track coronavirus confirmed cases across the globe

Android app for taking notes: Text, photos, audio, photos, and soon videos

Android app to report/track your location using Google Maps API

Project files for the tutorials on javatutorial.net

Here you can find the source code to my tutorials on YouTube: https://www.youtube.com/DennisKriechel

Android Flickr photo gallery Gradle app integrated with Travis CI and the Android Testing Framework

Resources for a conference talk on async tools for Java

Java Offline GeoIP maps any IP address to its country code

Exercise fields with fields for name, reps, sets, weight, rest. And sums up the total reps of a workout.

Ability to post to the Twitter API; uses WIFI/GPS to grab the user's location; JSON weather information from Wunderground.com using ISO codes; Save weather locations using SQLite.

All Algorithms implemented in Java

Piwigo Native Android App

An open source SQL database designed to process time series data, faster

Mario written using LWJGL and Jade: for Youtube series https://www.youtube.com/watch?v=VyKE7vz65rY&list=PLtrSb4XxIVbp8AKuEAlwNXDxr99e3woGE

Code for Head First Design Patterns book (2014)

Exercism exercises in Java.