How to Implement the OAuth 2.0 Authorization Code Flow in Java
OAuth 2.0’s Authorization Code Flow is the go-to standard for securing web applications that need to interact with identity providers on behalf of users. In this guide, we’ll walk through how to implement this flow in Java using industry-standard libraries — and explain each step along the way. Why Use the Authorization Code Flow in Java Web Apps? Java remains dominant in enterprise web application development, and OAuth 2.0 is the de facto standard for authorization. When building server-side rendered applications or backend services that interact with identity providers like ForgeRock, Auth0, or Okta, the Authorization Code Flow is the most secure option — especially when combined with HTTPS and secure session management. ...