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Sams Teach Yourself J2EE™ in 21 Days by Peter Roxburgh, Andy Longshaw, Debbie Law, Dan Haywood, Martin Bond

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Day 19. Integrating with External Resources

Yesterday, you learned about patterns and how they describe typical application development problems that you might face and how these patterns provide solutions to these problems. One problem that many application developers share is how to integrate a J2EE application with existing non-Java code, applications, or systems. Today's lesson introduces you to four possible solutions to this problem.

The first of these solutions is the J2EE Connector architecture, which allows you to connect to Enterprise Information Systems (EIS), such as Enterprise Resource Planning systems (ERP). Primarily, today's lesson focuses on this architecture, but it also shows you approaches to writing Java code that consumes ...

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