Get Vaadin Version in flow - vaadin

Question

In Vaadin 8, I was able to retrieve version information with
com.vaadin.shared.Version.getFullVersion()
In Vaadin Flow I cannot find a way to get the current version, at least not the one that I expected. I have found this one
com.vaadin.flow.server.Version.getFullVersion()
but the return value is 1.2.2 and not the expected 12.0.0. I guess it is the server version or something..
How do I get the used version of vaadin framework correctly in vaadin flow?

Answer 1

One possible approach to get the Vaadin version is to use
VaadinCoreShrinkWrap.class.getAnnotation(NpmPackage.class).version()
Not optimal, but it should work.
This approach works starting from Vaadin 14. It will cause errors with older versions.

Answer 2

Starting from 10, a Vaadin version doesn't have any content of its own, not even a version number marker. It's only a set of dependency versions that have been tested to work well together.
com.vaadin.flow.server.Version.getFullVersion() gives the version of the Vaadin Flow dependency. This is in most cases a more relevant version number to look at for technical purposes.
Vaadin 10 and Vaadin 11 used Flow 1.0.x, whereas Vaadin 12 uses version 1.2.x. Vaadin 13 will most likely use Flow version 1.3.x or 2.0.x, depending on how big changes will be included by then.

Answer 3

If you want to show Vaadin version and not Flow version I see one option to make it happen but it requires more code and some maven configuration.
You should
Create a properties file including the line vaadin.version=${vaadin.version}
Make sure the file is included in resources that maven-resources-plugin filter with something like the following in you build config:
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/config.properties</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<excludes>
<exclude>**/config.properties</exclude>
</excludes>
</resource>
</resources>
Read properties file and get value for version property
Properties properties = new Properties();
properties.load(MainView.class.getResourceAsStream("config.properties"));
properties.get("vaadin.version");