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Where do I get javareg.exe today?

Sachin Petkar

Joined: Apr 22, 2004
Posts: 4

There used to be a tool - javareg.exe - provided by Microsoft, which allowed you to register you Java code such that it could be called from VB, etc, via COM.
My question is - where is it now? I've searched through an installation of Windows 2000 Advanced Server & Visual Studio.Net 2003, all over the web and Microsoft's website. However, there seems to be no sign of it anywhere! If anyone has a copy of javareg.exe or knows a place where I may download it from, please let me know. My other option would be to convert my Java code to C# using the "Java Language Conversion Assistant" ... which I really don't want to do. Please help me save my Java !
Gabriel White
Ranch Hand

Joined: Mar 02, 2003
Posts: 233
I emailed you the file.
Let me know if you didn't get it.
Pippo Pippero

Joined: Mar 28, 2011
Posts: 2

I have the same problem (cannot find javareg.exe anywhere!). Could any of you kindly send it to me?

Ulf Dittmer

Joined: Mar 22, 2005
Posts: 42965
No. It only works with Microsoft's JVM, which has been obsolete for many years now. Some modern-day options can be found at
Pippo Pippero

Joined: Mar 28, 2011
Posts: 2
Thanks for the link; however, it looks like the FAQ there only answers the reverse problem (calling COM/DLL/ActiveX from within JAVA); I need the other way around... Any ideas?

Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 15081

Last year I worked at a company where we had to make .NET code call Java code and vice versa. We used JuggerNET to do this. Beware however that there were some gotcha's to have it working correctly. It generates proxy classes with a tool and it doesn't always automatically exactly do what you want.

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Rob Spoor

Joined: Oct 27, 2005
Posts: 20271

JNI can not only be used to call non-Java code from Java, it can also be used to call Java code from non-Java code. It involves launching an internal JVM, loading the class and use its results.

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I agree. Here's the link:
subject: Where do I get javareg.exe today?
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