Implementing CRUD functionality for an entity

We have now configured the Spring application context and configured our web application to load it during startup. We will now implement CRUD functions for a simple entity. Our example application is used to view and manage contact information, and we can implement it by following these steps:

  1. Create a domain model.
  2. Create a repository for an entity.
  3. Implement CRUD functions.


This chapter describes only such parts of our application that are required to understand how Spring Data JPA works.

Domain model

The domain model of our application consists of two classes: Contact and Address. This subsection will address the following matters:

  • The information content of each class
  • How we can create new objects ...

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