Launching ant from java code

I'm trying to launch an ant statement
that succeed from command line but not
from a java code.
this is what I do from command line

and I get:

init:
[deltree] DEPRECATED - The deltree task is deprecated. Use delete instead.
[deltree] Deleting: D:\igor\work\DBAccessOutput\veicoli\build
[deltree] DEPRECATED - The deltree task is deprecated. Use delete instead.
[deltree] Deleting: D:\igor\work\DBAccessOutput\veicoli\dist
[mkdir] Created dir: D:\igor\work\DBAccessOutput\veicoli\build
compile:
[javac] Compiling 14 source files to D:\igor\work\DBAccessOutput\veicoli\build
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -deprecation for details.
distribution:
[mkdir] Created dir: D:\igor\work\DBAccessOutput\veicoli\dist\lib
[jar] Building jar: D:\igor\work\DBAccessOutput\veicoli\dist\lib\MyProject-20031009.jar
BUILD SUCCESSFUL
Total time: 13 seconds

and this is what I get from java code:

and I get
BuildFile: build.xml does not exist!
or
bad arguments
Any suggestion?

Great!
I've found the answer my own!

A good happening in a dark day

I've found the answer on the Sun site

i went to the link and i didnt like they way ant as called there.
The problem with the way its done above eg

is that your calling the main method so you cant pass in a string you have to pass in an array of strings. The args should have been

i havent tested what is above so in case there is an error ill put what i used below.

hopefully this post can help others with the same problem.