[Wrapper-user] Auto-updating JREs corrupting themselves

[<Jas...@sc...>]

Hi,

This isn't solely related to wrapper processes, but I've had a lot of 
hassle with Sun's auto-updating mechanism trashing the installed JRE on 
Windows.

You end up with:

C:\>java -version
Error occurred during initialization of VM
java/lang/NoClassDefFoundError: java/lang/Object

It seems to be the fact that I am using the Invocation API 
(http://java.sun.com/j2se/1.4.2/docs/guide/jni/spec/invocation.html), 
mostly so that users see "MyProgram.exe"  rather than "java.exe" in the 
task manager. The wrapper calls my executable which parses all arguments 
similarly to java.exe but creates its own VM. Unfortunately the installer 
doesn't notice that my program is running and merrily installs, trashing 
itself in the process.

Anyone else suffered similarly? Any known workarounds?

Jason Chown
Sony Computer Entertainment Europe Limited
http://eu.playstation.com


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