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Develop the Mock Service

Explore how to develop a mock service for one-to-one unidirectional relationships using an in-memory database. Learn to implement create, find, remove, and edit operations with data transfer objects in Java Spring, preparing for user interface integration.

add function

Now that the data transfer object is set up, let’s add some functionality. The in-memory database follows the Singleton pattern implemented with an enum. A list of BookDto is saved in memory where the add method ...