Java Programming for Complete Beginners - Java 16 - Step 12 - Encapsulation Exercises - Better Validation and Book Class

The video tutorial discusses the concept of encapsulation in programming, focusing on how to manage speed and book copies using encapsulation techniques. It highlights the importance of validation and how encapsulation can simplify logic changes without affecting external code. The tutorial provides examples of using set methods to encapsulate logic and avoid code repetition, demonstrating encapsulation level 2, where business logic is integrated within the class.

Describe the process of increasing and decreasing the number of copies as mentioned in the video.

What does the term 'encapsulation level 2' refer to in the context of the video?