OAuth 2.0 Deep Dive | Access Token & Google Login in Spring Boot

In this video, we do a complete deep dive into OAuth 2.0 — understanding both the core concepts and the end-to-end implementation using Spring Boot and Spring Security 6. We start by answering: What is OAuth 2.0? Then we understand it through a real-life example of LeetCode login using Google. Step by step, we break down the entire OAuth 2.0 flow including: • Google Authorization API • Google Consent Screen • LeetCode Callback API • Google Fetch Token API • Google User Profile API • Client ID • Client Secret • Redirect URI • Scope • Response Type • State Parameter • Authorization Code and Access Token You will clearly understand: OAuth 2.0 architecture Client & Authorization Server Access Token generation OAuth 2.0 scope OAuth 2.0 state Parameter OAuth 2.0 consent screen OAuth2 Authentication & Authorization After understanding the complete theoretical flow, we move to practical implementation: ✔ Registering a Spring Boot application as a client in Google ✔ Implementing OAuth 2.0 in Spring Boot ✔ Integrating OAuth 2.0 with Spring Security 6 ✔ Implementing OAuth2 Google login in Spring Boot This is a complete OAuth 2.0 end-to-end implementation covering both concepts and coding. If you want to truly understand OAuth 2.0 — not just use it — this video will give you clarity from scratch to advanced level. Instagram :   / the.curious_coder   #interview #springboot #java