How can I add jars to the classpath when I invoke Jython *without* adding them to $CLASSPATH?

Question

I'd like to do something similar to jython -cp FOO:BAR:BAZ argle.py.

If I add FOO, BAR, and BAZ to $CLASSPATH this works. I tried to add them to sys.path at run-time, but that doesn't appear to work for jars. It does work if I add a path to the expanded jars to sys.path at runtime. Is there a simple alternative to exploding the jar files? Augmenting $CLASSPATH for every user that runs this script is not an acceptable alternative.

Thanks.

Answer 1

You can create a big JAR which contains all related classes. The following ant snippet shows the idea:

<target name="jar">
 <mkdir dir="build/jar"/>
 <unjar src="lib/jython.jar" dest="${classes.dir}" />
 <unjar src="lib/FOO.jar" dest="${classes.dir}" />
 <unjar src="lib/BAR.jar" dest="${classes.dir}" />
 <unjar src="lib/BAZ.jar" dest="${classes.dir}" />

 <jar destfile="build/jar/bigjython.jar" basedir="${classes.dir}">
     <manifest>
         <attribute name="Main-Class" value="${main-class}"/>
     </manifest>
 </jar>
</target>

Answer 2

See this also

Answer 3

you can use the -D option to set python.path:

jython -Dpython.path=FOO:BAR:BAZ argyle.py