Performing CRUD Operations using JPA

In this fourth and concluding part of the tutorial series, I show you how to perform CRUD (Create, Read, Update, and Delete) operations using JPA taking a simple but useful application called Contact Database. The tutorial makes use of Servlet and JSP technologies and Java DB database with Netbeans 8.2 IDE.

Overview of the Application

In this application, you will develop a contact database to perform operations such as create, search, update and delete contacts.  The application utilizes MVC (Model View Controller) pattern in design of operations wherein the entity class of JPA acts as model, JSP is used for view and Servlet is used for controller components.  The components of this application are shown in Figure-1.

Figure-1: Components of Contact Application