Vaadin 10 Java integration of https://github.com/GoogleWebComponents/google-signin

Fill your own Google Client Id in MY_GOOGLE_CLIENT_ID in file DemoView

Starting the test/demo server:

mvn jetty:run

This deploys demo at http:https://localhost:8080

Demo has different options of login button

Simplest scenario would be:

GoogleSignin signin = new GoogleSignin(MY_GOOGLE_CLIENT_ID);
signin.addLoginListener(event -> {
    Notification.show("Welcome, " + event.getFirstName());
});

But you probably want to do something cooler, like set auto-logout on and change the button size and add wicked dropshadow. And if you gonna go totally wild, maybe do something with the user-data provided.

NOTE that, by default signin has auto-logout feature on, this mean that google-session is logged out instantly after successful login (well, first the session is used to get basic user information, but after that). This is to protect user browser from auto-log in via sign in button. But in some case you might want to turn of auto-logout