In modern web development, testing is essential for ensuring the reliability and performance of applications. For developers working with Vaadin, one of the best testing tools is Karibu Testing. This testing framework stands out for its ability to run browserless testing, offering several advantages over traditional end-to-end testing approaches, such as Selenium, Playwright, or Cypress.

With the right tools, deploying and managing Java applications can be straightforward and efficient. This blog post will explore how Fly.io and Neon make a perfect combination for running Java apps.
Fly.io offers an easy-to-use platform for deploying your applications globally, while Neon provides a modern, serverless PostgreSQL database that works seamlessly with Java.

Processing phone numbers seems complicated at first glance because of the many different formats. In this post, I’ll show you that with libphonenumber, it becomes child’s play. I’ll also recommend how to store the phone number in the database.

Recently, I migrated my application to Google Cloud Run and Cloud SQL, and I struggled with connecting to the database. So, I’d like to share one way to achieve the connection.

When using schema-based multi-tenancy with Hibernate, a simple way to define the schema is using a MultiTenantConnectionProvider where we call SET SCHEMA on the connection. However, this approach does not work with certain databases like MS SQL.

Sometimes, you want to use a Spring Bean in a class that is not a Spring Bean, but then dependency injection doesn’t work. This article shows a way to get around that limitation.

I’ve been a software developer since 1995, but 2023 was by far the most exciting year of my IT career. Let’s look back on projects, conferences, and recognitions and an outlook to 2024.

When using the publish-subscribe domain with JMS we often want to use durable subscriptions. But how can this be done with Spring Boot?

Currently, I’m teaching JMS with Spring Boot at the University of Applied Science in Bern, Switzerland.
We use Apache ActiveMQ Artemis as the JMS message broker. But how can we test our Spring Boot application?

I’m using Karibu Testing for testing my Vaadin applications which work perfectly. But recently, I encountered a problem when I analyzed my code with SonarQube. Karibu Testing’s assertion methods are not recognized by SonarQube.