Basic question about ant

[veena pandit]

Hi,

I am a newbie to Ant.
I got the following from a tutorial and tried to add it to my existing
project:

<project default="wsgen"
    <target name = "wsgen">
    <exec executable="wsgen">
       <arg line="-cp ./bin -keep -s ./src -d
com.tutorial.wsServer.SayHello/>
    </exec
   </target>
</project>

I get:

Cannot run program "wsgen":CreateProcess error=2. The system cannot find the
path specified.

Any suggestions?