hi.
i'm doing an auto shooter for a DSLR camera using gphot2 library ( http://www.gphoto.org/).

i've tried two different things. none have workerd :/

1.    String[] params = { "/opt/local/bin/gphoto2", "--capture-image-and-download"};
2.    open(params);

it dosen't do anithing. if i just do

1. open("/opt/local/bin/gphoto2");

it opens the terminal (i'm on OSX) and show the manual of gphoto2....

SECOND APROACH:

i wrote a little script and made it excutable with chmod +x. the script take an argument ($1) to set the filename of the photo file...

1. killall PTPCamera
2. gphoto2  --capture-image-and-download --filename $1.jpg

the first line is to be sure that no other app is using the camera (photobooth or another).
again, if i open it with terminal it works like a charm, but in P5:

1. String[] params = { "/Users/pely/shutter_1milesima", "p5"};
2. open(params);

it doesn't work at all...
what am i missing here?
maybe using exec() from the java.runtime could work, but i don't really know how to neither...

please help me!