How use jarbundler to create an .app from JPortsUI.jar?

[Murray Eisenberg]

I have the MacPorts ports of jarbundler (@2.2.0_0) and apache-ant (@1.9.3_0) installed and active. I have the file JPortsUI.jar in the folder  ~/jPorts.

Trying to make sense of the docs at http://informagen.com/JarBundler/, I created in that same folder the file build.xml

     <taskdef name="jarbundler" 
         classname="net.sourceforge.jarbundler.JarBundler" />

as well as file jarbundler:

     <jarbundler dir="."
             name="jPort"
             mainclass="JPortsUI"
             jar="./JPortsUI.jar" />

I tried now:

  cd ~/JPorts
  ant build.xml

This generates error:

  Buildfile: /Users/[myuserdirname]/jPorts/build.xml

  BUILD FAILED
  /Users/[myuserdirname]/jPorts/build.xml:2: Unexpected element "{}tasked" {antlib:org.apache.tools.ant}taskdef


Question: What am I doing wrong?

A couple of particular questions:

 (i) Should there be an extension to file "jarbundler" and, if so, what?

(ii) The docs at http://informagen.com/JarBundler/ say to "move the file jarbundler-2.3.1.jar into your local ANT lib directory." Given the configuration of MacPorts, with ports going into /opt, what does that mean I also need to do, if anything?  I note that /opt/local/lib has no ant subdirectory.
  
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Murray Eisenberg		murrayeisenberg at gmail.com
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