ant compile is throwing error

Hi,

I have copied your build.xml file and changed the path value to E:/... where the jar files are residing in my system., it was in your code "F:/jars" was given.
the path in env var for ws.jars is changed.
when i try to execute 'ant compile' on command prompt, the error thrown is 'E:\Java\workspace\Module9_TestNG_Ant]build.xml:26: F:\jars does not exist.'

I have attached the zip file of the project.

Please help

thanks