Vaadin Blog

Vaadin 24.4 opens the door to the land of React
One prominent theme in Vaadin 24.4 is integration with React in various forms. React has grown in popularity to the point where it's currently the most popular UI rendering library for web applications. This means that there's excellent availability of third-party components, learning resources, ...

Hilla is now an integrated part of the Vaadin platform
I'm happy to announce that we're bringing Hilla back under the Vaadin brand as a part of the Vaadin platform. In addition, we're making it more convenient to configure routing so that new view files are automatically registered as routes. Finally, we'll start recommending signals for UI state ...

Building a Vaadin & Gemini AI Chatbot
This is the first part of our in-depth series on building a Vaadin & Gemini AI chatbot. In part two, we’ll add context management and UI customizations to enhance the chatbot. This blog post will detail how to build a web application that allows the user to input text prompts and receive a text ...

Fighting for simplicity with Vaadin 24.4
Twenty-four years ago, we founded Vaadin with the mission to simplify the development of business applications. Thanks to advancements in web and Java platforms, the development experience has improved significantly. However, many challenges persist; creating an outstanding business app for the web ...

Creating a custom Vaadin UI for an Apache Causeway application
The Apache Causeway project implements the naked objects pattern for Java. In the naked object pattern, the UI is essentially auto-generated based on the domain objects. With only the domain model, and typically some UI hints declared on the domain model, you get a fully functioning UI “for free.” ...

Java Swing: Rising tech debt costs signal it's time to modernize
Tech debt from legacy frameworks like Java Swing poses significant issues with major consequences for societies, governments, and companies of all sizes. According to 2022 CISQ research, the technical debt that the US economy has developed would require $1.52 trillion to fix. As time goes on, this ...

Latest news from Extended Maintenance
Vaadin 7 extended maintenance started in March 2019, and Vaadin 8 in February 2022. Vaadin 23 Prime support has just started in March 2024, and Vaadin 14 goes into extended maintenance in August 2024. So, what have we been doing lately? Let's take a look! Taking care of the infrastructure The build ...

How to open any file with Apache Tika
I wrote a handy web utility for you. It can read pretty much any file, detect a mime type and some of its other (file-specific) metadata, and preview its content as text. I'm not sure if it is really useful for anybody, but at least I hope it will work as an example of using Apache Tika in your web ...

A minimal OpenID Connect (OIDC)-secured Vaadin Flow application with Spring Boot
So, do you want or need to build a Java-based web application that is secured by a Single Sign-On (SSO) login? This is a very typical use case where you have part of an application that is not public and requires an authenticated user to access it. You could build a login mechanism yourself, but ...