V22 is here!

The latest feature release, Vaadin 22, is here! New on the table is stateless Fusion, official Quarkus support for Flow, and updates to the Vaadin components, such as compatibility with assistive technologies. The previous release will continue to receive support for a month.

Tetris-clone with Vaadin Flow

Server-side Tetris with Vaadin Flow

The server-side nature of Vaadin Flow often causes concerns for those who evaluate it: The UI must be slow, as the UI logic is on the server and the “chatty” connection will bring the server to its knees. In this era, it can be hard to convince your boss or fellow engineers in the face of these ...

Enable Users to Upload & Download Files

This guide demonstrates how to create a web app that enables users to upload and download files to and from the server in Java. In this guide, we create a web app that enables users to upload and download files to and from the server. The UI allows users to select local files to be uploaded to the ...
registration form in 100% java

Create a Registration Form in Pure Java

Learn how to create a responsive signup form with error handling and cross-field validation written in pure Java. In this guide, we create a standard registration form with error handling and cross-field validation. This signup form is developed entirely in pure Java using Vaadin Flow (no HTML or ...
Vaadin Start

Get started with Vaadin Start

Vaadin Start is an online configurator for generating Vaadin web apps, fast. You can choose between Vaadin Flow (if you prefer Java) and Vaadin Fusion (if you prefer TypeScript), but don’t worry about making the wrong choice; the frameworks are interoperable and can be used independently or ...
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Java and Vaadin

Vaadin has been enabling Java development teams to build enterprise-grade web apps in Java for over twenty years. The Vaadin framework is unique, as it is the only one that allows developers to build modern web apps completely in Java, without any browser plugins.  For well over two decades, Java ...
Vaadin CLI Featured image

What's the Vaadin CLI?

The Vaadin command line interface (CLI) is a fast way to create a new Vaadin Flow or Fusion project directly from your local terminal. Vaadin CLI is experimental and free to use. Prerequisites: you need to have Node.js installed. Go to the Node.js download page to install it on your development ...
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Java for front-end development in 2021

Vaadin has enabled Java development teams to build full-stack applications, 100% in Java, for over 20 years. With an extensive web component library, powerful abstraction capabilities, the new Collaboration Engine (for real-time collaboration) and Vaadin Fusion (for TypeScript support), Vaadin is ...

Top 5 most common Vaadin performance pitfalls and how to avoid them

A couple of weeks ago I was coding a demo app when it dawned on me that if I was to use my code in a real-world application, it would consume unacceptable amounts of memory once it reached 100 or more concurrent users. Vaadin Flow makes it easy to start coding web applications, even if you have no ...
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AMA with Matti Tahvonen, Product Owner of Vaadin Flow

We held our first AMA (Ask Me Anything) with Matti Tahvonen, Product Owner of Vaadin Flow, on our official Discord server on February 4. Some very interesting questions came up and we’ve summarized the highlights in this post. First things first: who is Matti? In his own words: Hello, I’m one of ...