Building on Gemini 1.5 as a Java developer Part 1

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 Learn why modernizing legacy Java Swing apps is crucial to cutting costs, enhancing security, and driving innovation.

Last call for Java Swing: The costs of tech debt are rising, and it’s time to modernize

Tech debt is a massive problem with consequences in store for societies, governments, and individual companies, from small business to enterprise. 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 ...
Think twice before overriding Object.equals()

Think twice before overriding Object.equals()

Overriding the Object.equals(Object) method, and its “companion” Object.hashCode(), provides your classes with some superpowers, but they are also one of the most common sources of problems that I see new and sometimes also more experienced Java and Vaadin developers struggling with. Some ...
4 Simple ways to display geospatial features in Vaadin Flow UIs

Four ways to display geospatial features in Vaadin Flow UIs

Java is a commonly used platform to edit geospatial data. There is almost an overload of various tools and libraries available. There are a number of UI widgets for Vaadin that allow you to plot and even edit geospatial information. The unique architecture of Vaadin Flow also allows you to build ...
Kotlin and Vaadin logos side by side in white

Build modern web apps 100% in Kotlin

Build modern web apps in 100% Java is the tagline often used for Vaadin Flow. By changing the language, this could actually apply to Kotlin as well, known for its Kotlin-to-JavaScript transpilation. Kotlin code can be transpiled to JavaScript for execution in the browser, so one could argue that no ...
Responsive Web Design with Java and Vaadin Flow

Building responsive websites with Java and Vaadin Flow

Responsive web design is an approach to building web applications that dynamically change the size or orientation of the visible elements for ideal viewing on viewports of various sizes. At various breakpoints (developer-defined numerical values of viewpoint dimensions), one may notice menus ...
Platform release Vaadin Flow 24.2

Vaadin Flow 24.2: Enhanced performance, new UI components, AppSec Kit, and more!

We're excited to announce the release of Vaadin 24.2, our latest iteration, packed with remarkable improvements focused on boosting productivity, enhancing UI components, improving security, and expanding our support for modern web technologies. Here's what you can expect in this update: Faster ...
Vaadin Flow 24.1 is out now

Vaadin Flow 24.1: Builds, grids, theming, and prototypes all get faster

Introducing V24.1 Today we are releasing Vaadin Flow 24.1, packed with new features designed to make web application development even faster and easier. In this release, we are excited to introduce two new low-code to pro-code tools, Visual View Builder and Visual Theme Editor. These tools enable ...

Building a Chatbot in Vaadin with OpenAI

Want to build a better version of ChatGPT? Here is how to use OpenAI's Chat completions API to add a robot participant to your Vaadin Flow chat app. Create a new chat app project Using the service at start.vaadin.com, create a new Vaadin application. There is a complete chat example template, but ...

Calling Java from JavaScript

Updated April 2023. In this step-by-step tutorial, you will learn how to use Vaadin to call server-side Java code from client-side JavaScript code. All you need to follow this tutorial is a basic understanding of the Java Programming Language, the fundamentals of JavaScript, JDK 8 or later, and a ...