Getting started with JPype

[porter]

Hi,

For nefarious javaesque reasons I've been trying to get started with
jpype (http://jpype.sourceforge.net). This looks like a potentially
useful tool for integrating java classes into C-python, but
frustratingly I've run into immediate problems. The documentation on
the project really doesn't deal with 'the basics' and I believe it is
this that I am running foul of: I have read much on the web, and I
suspect that this is a classpath issue, but I can't see what I'm doing
wrong.

And I'm confident that the path I specify is ok

The error I get is

"Package myclass.HelloWorld is not Callable"

but I suspect that this is, infact, telling me that the class
HelloWorld could not be found.

If so - why not? - Note that using java

Here's my python code snippet

from jpype import *

startJVM(getDefaultJVMPath(), "-ea", "-Djava.class.path=D:/tmp/jpype-
reli/test/dist/test.jar'' )

package = JPackage("myclass")
x = package.HelloWorld()
x.do_a_message()

shutdownJVM()

I have a java class called HelloWorld in package "myclass" which
resides in test.jar. The source is below:

package myclasses;

public class HelloWorld
{

    /** Creates a new instance of HelloWorld */
    public HelloWorld()
    {
    }

    public void message()
    {
        System.out.println("Hello, World");
    }

    public static void do_a_message()
    {
        System.out.println("Static Hello, World");
    }
}