Learn Java from Scratch - A Beginner's Guide - Step 07 - Building REST API to Retrieve Details of a Course – GET

The video tutorial explains how to create a simple API to get course details by ID. It covers the importance of using variables instead of hardcoded values, refactoring code to handle errors, and using Optional to manage potential null values. The tutorial also demonstrates how to return course details or throw exceptions if a course is not found.

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