Vaadin Flow 24.1 introduces a small but significant commit, optimizing memory usage by making Vaadin Flow collect UI instances more eagerly from the server memory. The so-called Beacon API, which is nowadays available in all browsers supported by Vaadin, is used to notify the server when the ...

Discover how Fujitsu supercharged its application migration process from Vaadin 7 to 14 with Vaadin's Expert-on-Demand (EOD) services. In just a week, Fujitsu had a solid starting point for the new version of the application. Fujitsu Finland is a full-service provider of information technology and ...

Web Push Notifications, also known as the Web Push API, are a service provided by browser vendors that enable web apps to display operating system notifications to end users, even when the browser window or installed app is closed. While this feature has been available for desktop browsers and ...

In my recent blog post, where I showed you how to estimate or measure the memory consumption of your Java application, I promised to provide some simple tips for optimizing your application’s memory usage. Some of the following tips are Vaadin-specific, while others are applicable to JVM services ...

Our previous blog post added wake word detection for a Vaadin application using Picovoice. That is a robust in-browser approach to creating always-listening apps. You might want to use that for full speech recognition, but the draft standard web speech API also provides a way to voice-enable ...

Hilla uses the Vaadin Lumo design system that comes with a set of simple of utility classes for common styling tasks. If you need more advanced functionality, like support for responsive layouts, you can easily switch to using the more comprehensive Tailwind CSS library. Here are the steps to set ...

Make your Vaadin web application more user-friendly and accessible with always-listening voice commands! With this quick 15-minute tutorial, you can integrate voice commands like "Alexa," "Hey Siri," and "Computer" into your application using the Picovoice Porcupine Wake Word Engine. Create a ...

ChatGPT can be a helpful tool for development and learning. But only if it knows about the technology you're using. The problem with ChatGPT and many other Large Language Models (LLMs) is that they are only trained on data up to a certain date. Tools like Bing, Bard, and ChatGPT plugins allow ...

Servlet session size has been a myth for ages. Many Java developers tend to religiously avoid storing anything in session because somebody at Google said that shouldn’t be done. With Vaadin Flow, that is the root of all goodness. The pure Java development model, the productivity, and the simplicity ...