error package org.python.util does not exist, compilation with ant

Question

I am trying to call a python method in java, similar functionality as Unresolved import org.python / working with jython and java?

However, I am using ant to compile and run my files. using import org.python.util will give me this error

package org.python.util does not exist

I can see that python.org.util exists in jython-2.5.0.jar.

So, here is the class path I have in my build.xml ant file:

classpath="${java.class.path}:./jgrapht/lib/jgrapht-jdk1.5.jar:\
    ./jgrapht/lib/jgraph.jar:./jgraphx/lib/jgraphx.jar:\
    ./jython/lib/jython-2.5.0.jar:./colt/lib/colt.jar:."

and I also I added the path to jython jar files to my class path. i.e. looks like echo $path gives me all the required paths. Is there anything missing here that I am not aware of?

tenorsax · Accepted Answer · 2012-02-20 03:32:23Z

0

Try this to make all classes in the package available:

import org.python.util.*;

Or this to include a particular class:

import org.python.util.TemplateAntTask;

EDIT: Also, looks like there is an extra slash after jython-2.5.0.jar in your classpath.

edited Feb 20, 2012 at 3:32

answered Feb 20, 2012 at 3:13

tenorsax

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4 Comments

Hasti Over a year ago

Thank you for your comment. I made the modifications based on your suggestion. However, I still get "package org.python.util does not exist [javac] import org.python.util.*; "

tenorsax Over a year ago

Try to compile one very basic java class with import of python: "javac -cp yourclasspath YourClass.java". Make sure this works. Also, post your ant script.

Hasti Over a year ago

I tried to compile a basic code based on your suggestion. If I use javac -cp myclasspath myclass.java it compiles just fine. however, javac myclass.java does not compile and I get the same error as before. Also when I echo $path I do see the correct class path!

tenorsax Over a year ago

You have to use correct classpath for java to compile/run properly. Do not confuse it with OS shell path. Make sure that classpath is specified correctly in you ant script. Check PATH and CLASSPATH article.

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