java jar invocation

[Ronald Klop]

On Mon, 21 Sep 2009 23:09:19 +0200, grarpamp <grarpamp at gmail.com> wrote:

>> BTW, Azureus (Vuze) is also in ports. Also you might want to
>> install java/jdk16 instead of diablo-jre16
>
> I figure it's better for me to learn the hard way before trying
> ports. The goal is openoffice. Yeah, hard :)
>
> So I found the commons here and pulled the jar file out of it:
>  http://apache.mirrors.redwire.net/commons/cli/binaries/commons-cli-1.2-bin.zip
>  commons-cli-1.2.jar
>
> Then ran this simple thing again:
>  java -cp `pwd`/commons-cli-1.2.jar -jar `pwd`/Azureus4.2.0.8.jar
>
> And I got the same error. But the access time on commons-cli-1.2.jar
> wasn't bumped, so I ktrace'd it.
>   5987 java     NAMI  "/.../commons-cli.jar"
>
> Playing along and dropping the apparently unneeded -cp arg, I get:
>  ln -s commons-cli-1.2.jar commons-cli.jar
>  java -jar `pwd`/Azureus4.2.0.8.jar
>   Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/log4j/Layout
>
> So after downloading and symlinking log4j, this simplification works:
>  java -jar Azureus4.2.0.8.jar --ui console
>
>
> The closest I can get so far to having the libs in one dir without
> symlinks and calling the app from elsewhere is to hunt up Main-Class
> in [Thanks AR]:
>  unzip Azureus4.2.0.8.jar META-INF/MANIFEST.MF
> then run:
>  java -cp `pwd`/jarz/\*:`pwd`/Azureus4.2.0.8.jar
> org.gudy.azureus2.ui.common.Main --ui console
> or move azureus into jarz and run:
>  java -cp `pwd`/jarz/\*
> org.gudy.azureus2.ui.common.Main --ui console
> or:
>  java -cp jarz/\*:Azureus4.2.0.8.jar
> org.gudy.azureus2.ui.common.Main --ui console
>
>
> The -jar style of that does not work:
>  java -cp jarz/\*:Azureus4.2.0.8.jar -jar Azureus4.2.0.8.jar
>   Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/commons/cli/ParseException
>
> I was eventually hoping for something like:
>  java -cp /usr/local/jarz -jar /usr/local/bin/app.jar
>
>
>> you are now running a jre compiled for FreeBSD-7.0
>
> Yes. Hopefully we'll have a current java from the foundation for
> 8.0 when it comes out.  And to keep current I want to figure out
> how to build from Sun's java sources sometime. If that doesn't
> work, I'll try ports.

You have to add all jars to the classpath explicitly. You can't specify a  
directory with jars or use *.
This is the easiest way I know.

for i in /usr/local/jarz/*.jar; do
   CLASSPATH="$CLASSPATH:$i"
done
java -cp "$CLASSPATH" -jar foo.jar

Ronald.