pdf to excel from command line or java/C#

I am right now trying to eval version. Right now when I run the command F:\NEW_SET_UP'S\Able2Extract 8.0\ -i "abc.pdf" -o "xyz.xls", it opens the tool UI. What I am looking for is if it can directly convert the pdf to excel without opening the UI directly through command line. Is this issue only with eval version or will be there for purchased version too.

if you have the SDK, let me know and I can directly use the library instead of doing shell command.