c# library in java

Here is a good article to runs you through this process
http://www.codeproject.com/Articles/378826/How-to-wrap-a-Csharp-library-for-use-in-Java

I've already seen that article. I can't compile the cs as a module. Only have a DLL

Have you looked into jni4net
http://sourceforge.net/projects/jni4net/

You may find this article helpful
http://www.codeproject.com/Articles/13093/C-method-calls-within-a-Java-program

Hi,

A hard coded way;
System.load("C:/mypath/mysuper.dll");

My provider here create a Console Application in CSharp running methods included in the third party C# DLL. Then call the Console Application (exe) from Java, that receive the method name as a parameter in addition to those required by the method in the third party C# DLL.