[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/vaadin/framework-8?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)

# Vaadin Framework

*[Vaadin](https://vaadin.com) allows you to build modern web apps efficiently in plain Java, without touching low level web technologies.*

This repository contains source code and issue tracking for Vaadin 8 and Vaadin 7, both of which use GWT as the base of client-side implementations. You can find source code and issue tracking for newer, web component based Vaadin versions in [vaadin/platform](https://github.com/vaadin/platform).

Vaadin 8 includes Vaadin 7 compatibility classes and is supported until February 21, 2022 (extended support will be available for ten years after that).

Vaadin 7 support has already ended, [extended support](https://vaadin.com/support/vaadin-7-extended-maintenance) is available until February 2029.

## Using Vaadin 8 to develop applications

Please refer to [Vaadin tutorial](https://vaadin.com/docs/v8/framework/tutorial.html) and other [documentation](https://vaadin.com/docs/v8/index.html).

For known issues within Vaadin framework, see [Issue Tracker](https://github.com/vaadin/framework/issues). Comment or react to an existing issue to mark your interest in resolving it. If you don't find an existing report of an issue you are experiencing, [submit a new issue](https://github.com/vaadin/framework/issues/new/choose).

## Contributing

To contribute, first refer to [Contributing Code](CONTRIBUTING.md)
for general instructions and requirements for contributing code to the Vaadin framework.

For instructions on how to set up a working environment for developing the Vaadin framework, please visit [Development Instructions](README-DEV.md). Pay special attention to workspace preferences.

We appreciate all contributors and want to make submitting changes as easy as possible. If you find any mistakes, unclear parts or out-of-date instructions, please let us know by submitting an issue or a pull request.