Wrapper App in ASP.NET for a Java App

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ASP.NET

Java

Hi i need to replicate a java swing application in ASP.NET environment. The front end user will be having access only to my wrapper ASP.net app and not to the java application .
I will be having some field in my java app and i should get the exact replica in .net so if i do any modification to the fields and submit in my wrapper application it should happen in my Java applications DB....What is the best possible way to do the same.. Pls help me out...