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...

Simple Database Application using JPA

This tutorial is the third part in the series and shows you how to create a simple database application using JPA.  You can perform data insertion and retrieval operations using it. The application makes use of Servlet and JSP as server-side technologies and Java DB as the database with Netbeans 8.2...

Managing Entities in JPA

In part-1 of this series, I just introduced JPA. In this post, I discuss on the life of an entity and briefly explain how to query entities using JPQL.  It helps you understand and develop JPA based applications. Life Cycle of an Entity As a developer, it is very crucial for you to understand...

Understanding JPA

This is the first part of a series of posts on JPA. In this post, I provide a concise introduction to this technology. Go through it, so that you can start developing JPA based applications following my posts at your pace. Why JPA? Data persistence is an essential part of almost every application....