I'd like to do something similar to <code>jython -cp FOO:BAR:BAZ argle.py</code>. If I add <code>FOO</code>, <code>BAR</code>, and <code>BAZ</code> to <code>$CLASSPATH</code> this works. I tried to add them to <code>sys.path</code> at run-time, but that doesn't appear to work for jars. It does work if I add a path to the expanded jars to <code>sys.path</code> at runtime. Is there a simple alternative to exploding the jar files? Augmenting <code>$CLASSPATH</code> for every user that runs this script is not an acceptable alternative. Thanks.

You can use the <code>-D</code> option to set <code>python.path</code>: <pre class="prettyprint"><code>jython -Dpython.path=FOO:BAR:BAZ argyle.py </code></pre>

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

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.

How do I know if a jar is classpath?

A pragmatic way: Class. forName("com. myclass") where com. myclass is a class that is inside (and only inside) your target jar; if that throws a ClassNotFoundException , then the jar is not on you current classpath.

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

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

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

Tags:

jython

jar

classpath

Hank Gay

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