# Skeleton Starter for Vaadin (from https://vaadin.com/hello-world-starters) 
# + Ping Component to fast detect dead sessions 

Just start app as described in original readme. 
Open some tabs in some browsers with address http://localhost:8080, 
then close that tabs and look at the console.

# Previous readme:

This project can be used as a starting point to create your own Vaadin application.
It has the necessary dependencies and files to help you get started.

The best way to use it is via [vaadin.com/start](https://vaadin.com/start) - you can get only the necessary parts and choose the package naming you want to use.
There is also a [getting started tutorial](https://vaadin.com/tutorials/getting-started-with-flow) based on this project.

To access it directly from github, clone the repository and import the project to the IDE of your choice as a Maven project. You need to have Java 8 or 11 installed.

Run using `mvn jetty:run` and open [http://localhost:8080](http://localhost:8080) in the browser.

If you want to run your app locally in the production mode, run `mvn jetty:run -Pproduction`.

### Running Integration Tests

Integration tests are implemented using [Vaadin TestBench](https://vaadin.com/testbench). The tests take a few minutes to run and are therefore included in a separate Maven profile. We recommend running tests with a production build to minimize the chance of development time toolchains affecting test stability. To run the tests using Google Chrome, execute

`mvn verify -Pit,production`

and make sure you have a valid TestBench license installed (you can obtain a
trial license from the [trial page](
https://vaadin.com/trial)).

## Project structure

The project follow Maven's [standard directory layout structure](https://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html):
- Under the `srs/main/java` are located Application sources
    - `GreetService.java` is a service class
    - `MainView.java` is an example Vaadin view
- Under the `srs/test` are located the TestBench test files
- `src/main/resources` contains configuration files and static resources
- The `frontend` directory in the root folder contains client-side
  dependencies and resource files. Example CSS styles used by the application
  are located under `frontend/styles`

## Useful links

- Read the documentation at [vaadin.com/docs](https://vaadin.com/docs).
- Follow the tutorials at [vaadin.com/tutorials](https://vaadin.com/tutorials).
- Watch training videos and get certified at [vaadin.com/learn/training]( https://vaadin.com/learn/training).
- Create new projects at [start.vaadin.com](https://start.vaadin.com/).
- Search UI components and their usage examples at [vaadin.com/components](https://vaadin.com/components).
- Find a collection of solutions to common use cases in [Vaadin Cookbook](https://cookbook.vaadin.com/).
- Find Add-ons at [vaadin.com/directory](https://vaadin.com/directory).
- Ask questions on [Stack Overflow](https://stackoverflow.com/questions/tagged/vaadin) or join our [Discord channel](https://discord.gg/MYFq5RTbBn).
- Report issues, create pull requests in [GitHub](https://github.com/vaadin/).

For a full Vaadin application example, there are more choices available also from [vaadin.com/start](https://vaadin.com/start) page.