It might sound a little complex using Java package in .Net but trust me, the interoperability is quite easy I’ll explain the procedure in few simple steps:

1. Create a simple Java class, for e.g.

public class CalculatorX {

public int Add(int firstNum, int secondNum)
{
return firstNum + secondNum;
}

}

2. Compile it to create a .class

> javac calculatorx.java

3. In case you have more than one class, you may package it into a JAR file.

> jar cvf calculatorx.jar *.class

4. Now, run *JBImp. JBImp is a Microsoft Java-language bytecode to MSIL converter.

> jbimp /t:library calculatorx.class

(or calculatorx.jar if you have created a package)

You’ll get the following output:

“Microsoft (R) Java-language bytecode to MSIL converter version 2.0.50727.42
for Microsoft (R) .NET Framework version 2.0.50727
Copyright (C) Microsoft Corp 2000-2002. All rights reserved.

Created CalculatorX.dll”

6. Here you go! Your .Net assembly named CalculatorX.dll is ready
7. Next, create a .Net project. Add a reference to the newly created .dll file and try it out!

(See the sample code below)

static void Main(string[] args)
{
CalculatorX c1 = new CalculatorX();
Console.Write(c1.Add(1, 2).ToString());
}

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