Java Programming for Complete Beginners - Java 16 - Step 07 - Building REST API to Retrieve Details of a Course – GET

The video tutorial explains how to create a simple API to retrieve course details by ID. It covers setting up a path variable, implementing a method to find courses by ID, handling errors and exceptions for non-existent courses, and finalizing the API. The tutorial emphasizes the importance of using variables instead of hardcoding values and demonstrates how to handle optional return types in Java.

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