Help: Manifest File

[dobject]

Hi everyone,
We have a java app that includes in its install package some JRE components.
We use to put these JREs under jre a subdirectory of the App main DIR at
this point everything works fine and the manifest file looks like:

Manifest-Version: 1.0
Main-Class: mycompany.DIR1.MAINCLASSNAME
Class-Path: .\jre\lib\jh.jar
Created-By: 1.2.2 (Sun Microsystems Inc.)

The problem with this approach is when you install more than one copy you
will duplicate also the JRE components (some 15 Megs).
To avoid these duplications we decided to put the JREs in a common directory
such as <WINDIR> (WINNT / Windows)
to do so the manifest file has to be updated to reflect the jh.jar path.
I tried a hard coded path: Class-Path: e:\WINNT\jre\lib\jh.jar and got this
error:
Exception in thread "main" java.lang.NoClassDefFoundError: mycompany/DIR1/MAINCLASSNAME

by removing the class-path line I got the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/help/HelpSetException
at mycompany.DIR1.MAINCLASSNAME.main(MAINCLASSNAME.java:30)

Please help,
any idea or suggestions are appreciated.
Thanks,

dobject.

[Paul Clapham]

I don't follow the bit about having to install JRE components at all. You
only need one instance of the JRE on each computer. Perhaps you meant this
"jh.jar" file in that category? And you are installing more than one copy of
your application on one computer? If that's the case, why not put jh.jar
into the extensions directory, which is the lib/ext directory in your JRE
installation. That way it's automatically in the classpath without your
having to say so.

PC2

"dobject" <dobject@caramail.com> wrote in message
news:3eca6e3f$1@tnews.web.devx.com...
>
> Hi everyone,
> We have a java app that includes in its install package some JRE
components.
> We use to put these JREs under jre a subdirectory of the App main DIR at
> this point everything works fine and the manifest file looks like:
>
> Manifest-Version: 1.0
> Main-Class: mycompany.DIR1.MAINCLASSNAME
> Class-Path: .\jre\lib\jh.jar
> Created-By: 1.2.2 (Sun Microsystems Inc.)
>
> The problem with this approach is when you install more than one copy you
> will duplicate also the JRE components (some 15 Megs).
> To avoid these duplications we decided to put the JREs in a common
directory
> such as <WINDIR> (WINNT / Windows)
> to do so the manifest file has to be updated to reflect the jh.jar path.
> I tried a hard coded path: Class-Path: e:\WINNT\jre\lib\jh.jar and got
this
> error:
> Exception in thread "main" java.lang.NoClassDefFoundError:
mycompany/DIR1/MAINCLASSNAME
>
> by removing the class-path line I got the following error:
> Exception in thread "main" java.lang.NoClassDefFoundError:
javax/help/HelpSetException
> at mycompany.DIR1.MAINCLASSNAME.main(MAINCLASSNAME.java:30)
>
> Please help,
> any idea or suggestions are appreciated.
> Thanks,
>
> dobject.
>