In this short and practical walkthrough, I show how to:

✅ Create a free Auth0 account

✅ Set up a Machine-to-Machine application

✅ Retrieve an access token using curl

✅ Secure your Spring Boot /private endpoint using OAuth2 JWT validation

✅ Test both public and secured endpoints

Whether you're exploring OAuth2 for the first time or need a quick proof of concept for client credentials flow — this is for you.

https://youtu.be/DUJRew_-Pfw

https://github.com/vinny59200/springboot-oauth

Feel free to share if this helps or tag someone building secure REST APIs with Spring Boot!

#SpringBoot #OAuth2 #Auth0 #SpringSecurity #JWT #JavaDeveloper #BackendDevelopment #SecureAPI #SpringBootTutorial #DeveloperTools