How to get access token by its AUTHORIZATION_CODE in spring mvc?

Question

Java

I can't get access token, but I get authorization code. I can not understand how in the controller or in the config you can do this. If you run the project https://github.com/VadimLi/spring-security-oauth2-... , then when you go to google, you can see the uri with the code and status, but I wanted to see the user data (id, first name, last name, email and etc.).
Thanks in advance.