Learn Java from Scratch - A Beginner's Guide - Step 12 - Encapsulation Exercises - Better Validation and Book Class

The video tutorial discusses issues with speed validation in code, highlighting the importance of encapsulation. It explains how to use the set speed method to ensure proper validation and avoid code repetition. The tutorial also covers managing book copies through simple methods, emphasizing encapsulation level 2, where business logic is contained within the class. The video concludes with exercises to practice these concepts.

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