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Java, Spring, and Alexa Developer

Craig is an engineer with VMware, Java Champion, Alexa Champion, and the author of Spring in Action and Build Talking Apps. He's a zealous promoter of the Spring Framework and developing voice experiences for Alexa, speaking frequently at local user groups and conferences and writing about Spring and Alexa. When he's not slinging code, Craig is planning his next trip to Disney World or Disneyland and spending as much time as he can with his wife, two daughters, 1 bird and 2 dogs.

My Books

Spring AI in Action

Buy at : Manning

Learn how to apply Generative AI in your Spring Boot applications!

Spring in Action, Sixth Edition

Buy at : Amazon | Manning

If you need to learn Spring, look no further than this widely beloved and comprehensive guide! Fully revised for Spring 5.3, and packed with interesting real-world examples to get your hands dirty with Spring.

Build Talking Apps for Alexa

Buy at : : Amazon |

Learn how to develop your own voice applications for Amazon Alexa. Start with techniques for building conversational user interfaces and dialog management. Integrate with existing applications and visual interfaces to complement voice-first applications.

My Videos

Spring Videos

Spring Office Hours (2/26/2024)

Introducing Spring AI (1/25/2024; jChampions Conference)

Generating Images with Spring AI

Tales from the Jar Side (9/21/2023; with Ken Kousen)

Spring AI Origins: A Look at LangChain

Spring AI and Embeddings

Alexa Videos

Alexa Office Hours (9/12/2023)

Running and Debugging Alexa Skills Locally

Experimenting with OpenAI's GPT-3 behind an Alexa skill

My Speaking Schedule

Tech events, conferences, and user groups where you'll find Craig talking about Spring, Spring Boot, Spring AI, and Alexa

Jan 9-12, 2024 CodeMash 2024 : Sandusky, OH
Jan 25, 26, 29 and 30, 2024 jChampions : Online
Feb 29, 2024 DeveloperWeek : Online
Apr 5-6, 2024 Gateway Software Symposium : St. Louis, MO
Apr 9-11, 2024 DevNexus : Atlanta, GA
May 7, 2024 Boulder JUG : Boulder, CO
May 8, 2024 Denver JUG : Denver, CO
May 17-18, 2024 Greater Wisconsin Software Symposium : Madison, WI
Jul 16-19, 2024 UberConf : Denver, CO
Aug 9-10, 2024 Twin Cities Software Symposium : Minneapolis, MN
Sept 5-6, 2024 Northern Virginia Software Symposium : Reston, VA
Sept 12-13, 2024 Central Iowa Software Symposium : Des Moines, IA
Sept 30-Oct 3, 2024 Dev2Next : Lone Tree, CO

My Projects

Here are a few of my favorite personal projects...

MouseGuests Alexa Skill

When you're in Disney World or Disneyland and need to know what the wait time is for Haunted Mansion, what time the park closes, or where you can find the nearest churro cart, the MouseGuests skill can help.

→ Read about this Alexa skill
The MouseGuests skill on
→ Launch MouseGuests on Your Echo Device

NFJS Alexa Skill

Are you attending a No Fluff Just Stuff conference? Want to find out about upcoming NFJS events? The NFJS Alexa Skill can be your guide to every NFJS experience.

→ The NFJS Skill on
→ Launch NFJS on Your Echo Device

MousePortation GraphGist

This Neo4j GraphGist can help you find the quickest path between parks, resorts, and other places in Walt Disney World.

→ Read the GraphGist
→ Read the original Gist


Where you can find and connect with Craig on social media

Popular repositories Loading

  1. spring-in-action-5-samples spring-in-action-5-samples Public

    Home for example code from Spring in Action 5.

    Java 1.2k 1k

  2. spring-in-action-6-samples spring-in-action-6-samples Public

    Sample code from Spring in Action 6

    Java 459 327

  3. spring-in-action-4-samples spring-in-action-4-samples Public

    Java 441 386

  4. spring-boot-in-action-samples spring-boot-in-action-samples Public

    Example code from Spring Boot in Action

    Java 128 83

  5. spring-security-oauth2-jwt-example spring-security-oauth2-jwt-example Public

    Sample for Spring Security OAuth2 with JWT tokens.

    Java 96 80

  6. spring-ai-examples spring-ai-examples Public

    Examples of using Spring AI.

    Java 70 18