Interacting with Databases through the Java Persistence API

[ Thanks to Sanjiv
Lavangare for this link. ]

“JPA entities are Java classes whose fields are
persisted to a database by the JPA API. JPA entities are Plain Old
Java Objects (POJOs), as such, they don’t need to extend any
specific parent class or implement any specific interface. A Java
class is designated as a JPA entity by decorating it with the
@Entity annotation.

“In order to create and test our first JPA entity, we will be
creating a new web application using the JavaServer Faces
framework. In this example we will name our application jpaweb. As
with all of our examples, we will be using the bundled GlassFish
application server.

“To create a new JPA Entity, we need to right-click on the
project and select New | Entity Class.”

Complete Story