April 2003
Intermediate to advanced
750 pages
16h 53m
English
book
EJB 2.0 Development with WebSphere Studio Application Developer
by Ueli Wahli, Wouter Denayer, Lars Schunk, Deborah Shaddon, Martin Weiss
Content preview from EJB 2.0 Development with WebSphere Studio Application Developer
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Developing inheritance structures
To complete the banking model shown in Figure 11-33 on page 435, we now implement the two subclasses of Account, Checking and Savings.
Support for inheritance in Application Developer
The EJB 2.0 specification does not support inheritance. However, IBM products, such as VisualAge for Java, WebSphere Application Server, and the Application Developer, provide support for inheritance structures of entity EJBs.
Entity EJBs can inherit attributes and methods from the superclass entity bean, define additional attributes and methods, and overwrite inherited methods.
Defining the inheritance structure
Application Developer enables us to define entity beans as subclasses of existing entity beans in the Create an Enterprise ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.