I am trying to develop a FTP client in J2ME, i have completed the GUI development. But I dont want to re-invent the wheel (if it exists) to write out a full new FTP library. So, Can anyone tell me if there is any FTP library existing for J2ME or not.
Else i have to write the full code using socket programming.
Did you trying google?
http://sourceforge.net/projects/j2meftpclient/
It's usually worth trying to find out if there's a library available for your core functionality before you write the front end...
Update
It's also worth considering, in the case where you'd have to write your own FTP library, going with another technology if possible. For example, there's HTTP support in J2ME, so if your desired task could be funnelled through HTTP and it would take less time to do that than write an ftp library, consider it.