Using a DLL?

Hi, I am wanting to write a program that opens and edits a certain type of archive of files. These particular files are weird and complex. Someone has made a couple of DLL's that have functions in them that will open and read from/write to these files.
I was wondering if anyone could explain how I could implement these DLL's into a Java program. Also, the DLL's are poorly documented, so is there any way I can look in the DLL to see the syntax of the methods that I want to call?
Thanks.

etgohomeok wrote:
Hi, I am wanting to write a program that opens and edits a certain type of archive of files. These particular files are weird and complex. Someone has made a couple of DLL's that have functions in them that will open and read from/write to these files.
I was wondering if anyone could explain how I could implement these DLL's into a Java program. Also, the DLL's are poorly documented, so is there any way I can look in the DLL to see the syntax of the methods that I want to call?
Thanks.That depends on the type of .DLL. If it's a managed (.NET) dll, then you're not easily going to be able to plug into it from Java. If it's not a managed .DLL, then it'll be a little bit easier (but it's still non-trivial). You'll essentially have to write your OWN DLL using JNI that encapsulates and exposes the functionality that you want in your application via native method hooks.
You'll want to go through the JNI tutorial.
As for the documentation aspect, if it's a .NET Dll, its pretty easy to take a look and see how it works (download an express version of C# Visual Studio - free - and use the Object Explorer to look over the exposed methods). If it's not managed, then I don't know what to tell you.

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Attachments:
Array1D.zip ‏60 KB

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Message Edited by smercurio_fc on 03-16-2007 12:57 PM
Attachments:
Example_BD.png ‏2 KB

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