Ken Kousen

java_8_recipes. Source code for Modern Java Recipes book from O'Reilly

claude-code-training. Slides and demos for a training course on Claude Code

spring-and-spring-boot. Lab solutions for Spring and Spring Boot course

kotlin-cookbook. Code from the book _Kotlin Cookbook_, published by O'Reilly Media in 2019, http://shop.oreilly.com/product/0636920224327.do

Making-Java-Groovy. Source code for Manning book "Making Java Groovy"

java_upgrade. Code for Java upgrade workshop

Spring-Framework-Essentials. Projects used in Spring Framework Essentials video course

java_latest. Samples for Java features from Java 8 through 25

junit5_workshop. Demos and tests for JUnit 5 workshop

GradleRecipesForAndroid. Source code for the book "Gradle Recipes for Android"

java_9_recipes. Source code for Java 9 chapter of Modern Java Recipes

reactive-spring. Exercise solutions for Reactive Spring training course

Advanced_Java. Source code for "Advanced Java" video course from O'Reilly

cfboxscores. Baseball boxscore retriever using Java 8 CompletableFutures

AdvancedGroovy. Examples for my NFJS Advanced Groovy: Tips and Tricks talk

OpenAIClient. Demonstrates how to use Spring to access OpenAI restful web services without using the Spring AI project. Tests call ChatGPT for text, DALL-E for image generation, and Whisper for audio transcriptions.

mockito-hamcrest. Examples for Mockito and Hamcrest Matchers course

IntroGroovy. Intro Groovy source, based on Appendix A of Making Java Groovy

openaidemo. Demo of how access the OpenAI API using Java 17

java_groovy_kotlin. Repository from "Functional Programming in Java, Groovy, and Kotlin" presentation

mockitobook. Code examples for the book Mockito Made Clear, from Pragmatic Programmers

springaiexamples. Examples from the Spring AI workshop on Azure, without the cloud parts. See https://github.com/Azure-Samples/spring-ai-azure-workshop for the original versions.

shopping_rest. Spring REST API for products

HelloWorldAS. Android "Hello, World" example, using Android Studio

AiJavaLabs. Exercises for a course on integrating AI services with Java.

generics. Source code for "Understanding Java 8 Generics" video course

spring-kotlin. Lab solutions for Spring with Kotlin course

HelloKotlinAndroid. Basic Hello, World! Android app written in Kotlin

OperaGenerator. AI opera generator, with images

reactive-officers. Reactive Spring demo for O'Reilly video course

http-client-demo. Use Java 11 HTTP client to parse astro data

ICNDB_AS. Rewritten ICNDB app using Android Studio with gradle builds

Spring_AI_Training_Course. Exercises and solutions for a training course on Spring AI

LangChain4j_Training_course. Exercises and code for a training course on the LangChain4j framework

from-gof-to-lambda. Java

Supers. SuperHero summary/detail fragment example for O'Reilly video course

use_groovy_now. Sample code for "Seriously, Use Groovy NOW!" talk

GeminiMcpServer. Wraps Gemini 2.5 flash in an MCP server

functional_modern_java. Java

spock-workshop. Spock Workshop starter code

shopping_v3. Simple teaching app based on Spring Boot 3

Spock-NFJS-Article. Source code for Spock article in June 2011 issue of NFJS the Magazine

PracticalGroovy. Examples for O'Reilly video course, "Practical Groovy"

restclient_v3. Access multiple public REST services using Spring Boot rest clients WebClient, RestTemplate, HttpExchange

cosmic-catalog. Curated astronomical observations from telescopes like Hubble and JWST

functional_java. Functional programming in Java demos

questjpa. Quest application for Spring Data JPA course

claudeAI. Spring Boot 3.2.0 project to access the Claude API

kotlin-workshop. JetBrains Kotlin Workshop Material

modern_java. Modern Java through Java 17

ICNDB_Jetpack. Joke app using Jetpack components

TestingGroovyScripts. Code to support blog post on testing Groovy scripts

gh_mcp_server. MCP wrapper for the `gh` command

certificate-service. Generates a digitally-signed pdf certificate of ownership for my books

rest-service. Demo Restful web service using Spring Boot, with embedded MongoDB

Unboxing. Source code to support Unboxing blog posts to support my "Unboxing my ebook" video about Mockito Made Clear

MyKotlinApplication. Simple Android app written in Kotlin, used for presentations

HttpIntefacesDemo. Demo using Spring Boot 3.1 HTTP Interfaces on the JSON Placeholder project

SpringGPT5. Use Spring to access GPT-5 reasoning models