[Pljava-dev] Unable to load class org/postgresql/pljava/internal/Backend

Hi there,

I am having some problem when trying to experiment with a hello world
example. When I run the following command I am getting this error
message.
I am not sure what I am doing wrong.
The class path seems to be correct. I have the pljava.jar file in /root/mydir
How can I resolve this. Thanks,

SELECT sqlj.install_jar('file:///root/mydir/hello.jar',
'helloworld_jar', false);
WARNING: java.lang.NoClassDefFoundError: org/postgresql/pljava/internal/Backend
ERROR: Unable to load class org/postgresql/pljava/internal/Backend
using CLASSPATH '-Djava.class.path=/root/mydir/pljava.jar'