Thao,

J# only supports up to JDK 1.1.4 (with a few additional packages), so any
code that uses some newer JDK libraries will not convert automatically, and
may have to be reimplemented to run under .Net. In order for J# to
convert your code to J# it will need access to all source code (except
those classes defined in JDK 1.1.4, which are implemented in the J#
runtime). JBImp will only work on JDK 1.1.4 class files as well. If you try
to run JBImp on a class file that references classes you don't have access
to, you will get error messages for those classes that could not be found.

I hope this information is helpful,

Michael Green
Microsoft Developer Support

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| Content-Class: urn:content-classes:message
| From: "Thao" <tpham@genex.com>
| Sender: "Thao" <tpham@genex.com>
| Subject: Converting Java to Visual J#
| Date: Wed, 14 Jan 2004 17:13:29 -0800
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| Hi, sorry if this issue has already been asked, but I've
| read and read about transitioning from Java classes to
| Visual J# and still am having problems doing this, any
| help would be appreciated.
|
| We run a web site for a very high profile client, the web
| site is integrated with theirs which runs Java and Bea
| Weblogic, etc. We received some compiled Java classes
| from them that handles digital signatures and uses Sun's
| java.security package amongst others. We were using MS
| JVM to instantiate a Java wrapper class from ASP, which in
| turn called their Java classes to handle the digital
| signature processing. Now that MS JVM is going away, I am
| trying to convert to Visual J#. What is the best way to
| do this? I managed to decompile the .class files
| into .java source code and keep encountering errors when I
| try to build with the source code in VJ#. Their classes
| imported other proprietary classes along with Sun's
| packages. I'm sure I didn't need to have all the .java
| code to every imported item since it was running under MS
| JVM. I need to figure out if there is an easy way to
| bring these classes over to .NET, and I don't want to use
| C# since there's a deadline on this, it would be easier to
| work with the classes I have and move to VJ# just for
| these classes, and then be able to use it from within
| ASP.Net.
|
| So basically, there are 5 class files I received with
| proprietary code. The 5 class files reference other
| packages, either Sun, or other proprietary stuff. The
| methods our current ASP code uses doesn't seem to need the
| other proprietary stuff that we don't have on our server,
| perhaps because it never goes down that code path, so I've
| not seen it err. Now that I'm trying to move the code to
| Visual J#, I run into errors indicating certain files
| can't be found, so far, it's been the proprietary stuff
| which I don't readily have access to, but I imagine once I
| get pass this problem, I might run into Sun java packages
| missing (I've seen the technology mapping of what's
| supported and it seems like java.security and java.util is
| supported, but I had an error for java.util also). Please
| help if you can and assume I'm a newbie to VJ# with the
| exception of having read a lot of MSDN articles and the
| transition guide.
|
| Thanks,
| Thao
|