Microsoft KB Archive/922969

= FIX: A Visual J# .NET application may not correctly load different versions of the same class from different assemblies on a computer that is running Visual J# .NET Redistributable Package 2.0 =

Article ID: 922969

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft Visual J# .NET Redistributable Package

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SYMPTOMS
A Visual J# .NET application may not correctly load different versions of the same class from different assemblies on a computer that is running Microsoft Visual J# .NET Redistributable Package 2.0.

Consider the following scenario in a Microsoft Visual J# .NET application:
 * You use the Java.Lang.Class.forName method to load a Visual J# .NET class from a specific assembly.
 * You load a different version of the same class from a different assembly.

In this scenario, you may experience the following symptoms:
 * If you use the Microsoft .NET Framework 1.1, the application always loads only the first version of the class.
 * If you use the Microsoft .NET Framework 2.0, you receive a RuntimeException exception error message when the application loads the second version of the class.

This problem also occurs if the following conditions are true:
 * You use the Java.Lang.Class.forName method to load both the .NET Framework 1.1 class and the .NET Framework 2.0 class in the application. However, you load these classes from different assemblies.
 * Then, you use the Class.FromType function to retrieve the class.

Note This problem only occurs when you use the Visual J# .NET runtime or the library code.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must have the Microsoft Visual J# .NET Redistributable Package version 2.0 installed to apply this hotfix.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbhotfixserver kbqfe kbpubtypekc KB922969

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