Can the Java Pet Store Demo really be ported to another platform or programming language?
A. The purpose of the JavaTM Pet Store Demo is to illustrate design patterns and advanced coding strategies that relate directly to the Java programming language and specifically to the JavaTM 2 Platform, Enterprise Edition (J2EETM). A genuinely ported application would have to implement the same design patterns and same coding strategies to really be comparable. It would also need to have the same depth of exception handling and use the same container-managed services such as transaction management, threading, persistence, and asynchronous messaging. The Java Pet Store Demo can be re-implemented as a new application on a proprietary platform, but then your technology infrastructure–that is, your application platform–is single-sourced. Source code portability is an issue only when you’re fully rewriting your application. The Java Pet Store Demo is portable across a multitude of platform implementations from different vendors. The J2EE deployathon demonstrates this. Vendor portability
