What is the process for confirming the validity of a Google Oauth2.0 access token in Spring Boot, in order to restrict resource access to only those users with valid Access Tokens?

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The process for confirming the validity of a Google OAuth2.0 access token in Spring Boot to restrict resource access to only those users with valid access tokens can be broken down into the following steps:

1. Add the Spring Security OAuth2 client dependencies to your application.

2. Configure your Spring Security OAuth2 client to authenticate with Google.

3. Configure your application to use Spring Security to secure your resources.

4. Implement a custom access token converter to validate the Google access token.

5. Secure your resources by adding the appropriate security annotations to your controller endpoints.

6. Test the resource access using a valid and invalid Google access token.

7. Access the secured resource from the client application.

Overall, by following this process, you can provide secure and restricted access to your resources by verifying the validity of Google OAuth2.0 access tokens.