This thread has been cross posted here:
http://www.java-forums.org/networking/80494-how-can-i-eject-pen-drive-pc-through-mobile-phone.html
Although cross posting is allowed,
for everyone's benefit, please read:
Java Programming Forums Cross Posting Rules
The Problems With Cross Posting
I suggest taking a look at the link in my signature on asking questions the smart way. It's pretty difficult to answer "how do I do this" type questions other than to point you to google. What have you tried? Where are you stuck? Additionally, many forum members do not speak English as a first language, so using SMS-style abbreviations can make you hard to understand- not to mention make you look lazy.