Re: Java vs. .NET Face/Off

vhamberg@xxxxxxxxxxx skrev den 13-08-2008 18:52:

Cool! Yeah, DLL just means dynamic link library, after all.

I just looked at the IKVM site - Richard, my boss, does all the .Net, so I hear about it - have not had time to actually use it - have done quite a bit of pre-.Net VB development.

So the site said that you can create a DLL from a JAR file - and that DLL is what you can use in .Net. Therefore, you can take jt400.jar and make a DLL from it that is usable in .Net - and since anyone can use ikvmc to do it, seems there is no need to publish it.

Got it working with Visual Studio C# Express.

Download ikvm. Run "ikvmc -target:library ....pathtojt400.jar". It generates jt400.dll

Open Visual Studio C# Express, create a console application project, right click on project node and add references to jt400.dll and (bummer) IKVM.OpenJDK.ClassLibrary.dll. Then the following code runs:

===
using System;
using System.Collections.Generic;
using System.Text;
using com.ibm.as400.access;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
com.ibm.as400.access.AS400 as400 = new com.ibm.as400.access.AS400("system", "user", "password");
IFSFile ifs = new com.ibm.as400.access.IFSFile(as400, "/");
foreach (String s in ifs.list()) {
Console.Out.WriteLine(s);
};
as400.disconnectAllServices();
Console.Out.WriteLine("Done");

}
}
}
===

I am a newbie both with the program and the language so feel free to suggest improvements.

The major impediment between this and the same solution in plain java is the extra baggage of the 25 Mb IKVM...dll file. Oh well :)