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Vaadin 16.0.0.alpha1
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latest releases: 24.6.0.alpha3, 23.5.10, 24.5.4...
pre-release4 years ago

Vaadin 16.0.0.alpha1

Vaadin consists of a set of web components, a Java web framework, configurable themes, tools and a set of app templates.

Visit vaadin.com to get started.

New and Noteworthy

Here are the highlighted new and improved features in Vaadin 16. To see the full list of bug fixes and improvements, check Included Projects and Change Log.

Automatic Node installation

  • Available from Vaadin versions 16
  • If no global or local Node installation is found Node will be automatically installed to ~/.vaadin
    • Only requires the first project to install as later can use the same installation
    • No need to have Node installed for CI
  • Uses proxy data from
    • System properties
    • {project}/.npmrc
    • ~/.npmrc
    • Environment variables

pnpm is the default frontend package manager

  • Now pnpm is used by default instead of npm
    • npm was still default in Vaadin 14.2 and 15
  • No migration needed - pnpm is installed once to /.vaadin inside home folder. See differences here for more information about what has changed

Devmode is run as a separate thread to speed up server startup

  • Allows server to continue startup parallel to Flow development mode process which runs pnpm/npm and webpack build
  • The browser shows a white page that is automatically refreshed to open app once devmode process has finished
  • As server is started up faster, there is no timeout from "run from IDE" or from server plugins

Support

Vaadin 16 is supported for one month after Vaadin 17 has been released. The latest LTS (long term support) version is Vaadin 14. More details of our release model are available on our roadmap page.

Vaadin also provides commercial support and warranty.

Included Projects and Change Log

Vaadin includes the following projects. Release notes with detailed change logs for each project are linked below.

Projects marked as (Pro) are available for users with Pro or Prime subscriptions. Everything else is free and open source.

Java Web Framework

Components

Themes

  • Vaadin Lumo theme (v1.5.0)
  • Vaadin Material theme (v1.2.3).

Router

Tools

Getting Started with Vaadin

App starters

The best way to get started with Vaadin is to go to https://vaadin.com/start and pick an app template for the technology stack you’re interested in.

Note

Vaadin 16 starters are not available just yet in vaadin.com. You can use Vaadin 14 starter and manually change Vaadin version (see instructions below).

Manually changing Vaadin version for Java projects

Add the following contents to your project pom.xml. 

<dependencyManagement>
    ...
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-bom</artifactId>
        <version>16.0.0.alpha1</version>
        <type>pom</type>
        <scope>import</scope>
    </dependency>
    ...
</dependencyManagement>

<repositories>
    <repository>
        <id>vaadin-prereleases</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </repository>
</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>vaadin-prereleases</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </pluginRepository>
</pluginRepositories>

Known Issues and Limitations

This is the prerelease version of Vaadin 16 for evaluating a number of new features and bug fixes. The API in this prerelease version is not considered final and may change based on user feedback.

Flow

  • The Template-in-Template feature has some limitations
  • Links matching the context do not result in browser page load by default, instead they are handled with application routing. To opt-out, set the router-ignore attribute on the anchor element. This opt-out is needed for cases when native browser navigation is necessary, e. g., when using Anchor to link a StreamResource download.
  • pnpm is not able to resolve dependencies to git commits with the "short" hash format. See details and workaround from vaadin/flow#7406

Migrating from Vaadin 8

See the migration guide

Migrating from Vaadin 10-14

See the migration guide

Reporting Issues

We appreciate if you try to find the most relevant repository to report the issue in. If it is not obvious which project to add issues to, you are always welcome to report any issue at https://github.com/vaadin/platform/issues.

A few rules of thumb will help you and us in finding the correct repository for the issue:

  1. If you encounter an issue when using the HTML/JS API of a component or the component renders incorrectly, the problem is likely in the web component. The web component repositories are named like https://github.com/vaadin/vaadin-button
  2. If you encounter an issue when using the Java API of a component, the problem is likely in the Flow integration of the web component. The Flow component integration repositories are named like https://github.com/vaadin/vaadin-button-flow
  3. If you encounter an issue with Flow which does not seem to be related to a specific component, the problem is likely in Flow itself. The Flow repository is https://github.com/vaadin/flow
  4. If you encounter an issue with Designer, the repository is https://github.com/vaadin/designer
  5. If you encounter an issue with TestBench, the repository is https://github.com/vaadin/testbench
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