Java for Beginners with Hands-On Program and Capstone Project - Save the Book Entity in a list inside Repository

The video tutorial discusses how to save a Book entity from the controller to the repository in a Java application. Initially, it suggests using a list to store Book entities, but highlights the issue of data loss when the program stops. To address this, the video introduces serialization as a method to persist data by converting it into a byte stream and saving it to a file. The tutorial concludes with a plan to apply serialization in the next video.

What new insight or understanding did you gain from this video?