J2EE, JMS to legacy app - general Question

Hi,

I was wondering is someone could explain (and even prvoide a diagram) of how java J2EE can communicate with a leacy application (say c++). Someone siggeste CORBA, another Person suggesed JMS and another suggested RMI/IIOP. Which is best. Also in terms of data architecture, what is the optimal set-up for a generic application of this style which might also have to deal with an enterprise web application (JSP's & Servlets). For example with the JMS route somebody suggested using a legacy layer/tier - what is this

Thanks for your help

sitecorpAsked:
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Mayank SAssociate Director - Product EngineeringCommented:
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KantiCommented:
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Mayank SAssociate Director - Product EngineeringCommented:
It depends upon how the enterprise system has been enabled. If its through a web-service it will make life easier for any kind of application (Java or .NET) to interact with it. RMI is proprietary Java.
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