Announcing: Sustainability for Java Developers
Java developers from around the world are writung a book about a question that's becoming impossible to ignore: how do we write software …
Simon Martinelli
20 articles
Testing Emails with Testcontainers and Mailpit
Testing email functionality is often painful. SMTP servers are external, tests become slow or flaky, and local setups differ from CI …
Spec-Driven Development with AI: A New Approach and a Journey into the Past
We’re at an inflection point. AI can generate high-quality code, but only if we give it high-quality specifications.
How to Deploy a Vaadin Application as a WAR on Tomcat 11
If you want to run a Vaadin application on an external servlet container like Apache Tomcat 11, you need to package your application as a …
Securing Vaadin Applications with Microsoft Entra
Many companies use Microsoft 365, so letting users log in with their Microsoft account is a good choice. This blog post shows how to secure …
Integrating Google Analytics With Vaadin Flow: A Step-By-Step Guide
Want to track how users interact with your Vaadin Flow application? Learn how to integrate Google Analytics with a clean, reusable …
Browserless Testing of Vaadin Applications with Karibu Testing
About a testing framework that stands out for its ability to run browserless testing, offering several advantages over traditional …
The Best Way to Handle Phone Numbers
Processing phone numbers seems complicated at first glance because of the many different formats.
Foojay Podcast #53: JCON Report, Part 5 – CQRS, JOOQ, GraphQL, API, Vaadin, OpenRewrite, ErrorProne, Gateways, Proxies,...
In this episode you'll hear Simon Martinelli, Nicolas Fränkel, Marcus Hellberg, Rick Ossendrijver, and Abdel Sghiouar.
Foojay Podcast #46: JUG Switzerland
In this episode, Frank and the Foojay Podcast leave the European Union and step over the border of Switzerland, the country where the Red …
Video: Spring Boot Testcontainers Support for Local Development
With Spring Boot 3.1, Testcontainers support for local development was added. This video will show you how this works and how to use it.
Video: Spring Boot Docker Compose Support
In Spring Boot 3.1, Docker Compose support was added to simplify local development with external resources.
Durable Subscription with JMS and Spring Boot
When using the publish-subscribe domain with JMS, we often want to use durable subscriptions. But how can this be done with Spring Boot?
Testing Spring Boot JMS with ActiveMQ Artemis and Testcontainers
Testcontainers is a fantastic way to start resources as containers. Even if there is no pre-made container, you can always use …
Video: Vaadin Drag & Drop Support. It's so easy!
In this video I show how simple it can be to add drag and drop to a Vaadin application! - by Simon Martinelli
Vaadin, OAuth2, and Keycloak
Security matters! Learn how to configure Vaadin and Spring Security to use OAuth2 with Keycloak on Foojay.io Today!
How to deploy a Vaadin application to Google Cloud App Engine
Deploying to Google App Engine is straight-forward using the Maven plugin, but you must analyze the log files and probably configure the …
Master-Detail with Hilla
Learn how to use the web application framework Hilla to create a master-detail view with a Grid to display data and a Form to edit the data.
Visualization of Business Function Message Flow with Vaadin and Neo4j
Analyzing & visualizing message flows between business functions was the goal of my current project. Learn about where Vaadin and Neo4J fit!
Vaadin and jOOQ: Match Made in Heaven
Quickly learn how easy it is to create data-centric web applications with the combination of Vaadin and jOOQ!