Learn IT: Java Core Tutorial

Leetcode solutions

All Algorithms implemented in Java

😎 Awesome lists about all kinds of interesting topics

Clean Code concepts adapted for JavaScript

Best collection of Java Interview resources including books, courses, interview questions and answers on different topics like core java, collections, mutlithreading, functional programming, serial…

A collective list of free APIs

📚 Freely available programming books

A collection of best resources to learn System Design, Software architecture, and prepare for System Design Interviews

A book series (2 published editions) on the JS language.

3D character customizer

This is an example application to show howto use Spring Boot 3, Angular 19, Kafka with Streams and Mongodb with the reactive features of Spring in a clean architecture and a Helm chart for the Kube…

A project to show howto use SpringAI with OpenAI to chat with the documents in a library. Documents are stored in a normal/vector database. The AI is used to create embeddings from documents that a…

A TDD implementation of the Gilded Rose stock control system

Fault tolerance and resilience patterns for the JVM

Interactive deep learning book with multi-framework code, math, and discussions. Adopted at 500 universities from 70 countries including Stanford, MIT, Harvard, and Cambridge.

WireMock Spring Boot drastically simplifies testing HTTP clients in Spring Boot & Junit 5 based integration tests.

jOOQ is the best way to write SQL in Java

Modular applications with Spring Boot

Spring Authorization Server

Spring Framework

A concise and universal guide to clear software design.

Samples for Java features from Java 8 through 21

Source code for Modern Java Recipes book from O'Reilly