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  Tutorial: Java validation with dynamic proxies

Decouple validation processes from your business object implementations.

Tutorial Details:

Version 1.3 of the Java platform saw the introduction of the dynamic proxy facility. Dynamic proxies offer many interesting solutions to Java developers, including a validation scheme that easily decouples validation logic from an application's core business logic. In this article, Java developer Eric Olson shows you how dynamic proxies can keep your core application code free of validation routines and focused solely on business logic.

Validation is an essential aspect of many enterprise applications. Most business methods contain validation logic to ensure that pre-conditions are met before carrying out business logic. Code that deals with values entered through a user interface employs validation logic to ensure that the values entered by a user are valid before carrying out actions that may affect other areas of the application or other users. Validation is an especially important component of applications that employ and interact with other loosely coupled components, as well as services that may not be strict in their assertions.


 

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