is it possible to send an sms through JAVA..

My requirement is a chat application like Rediff bol. am able to do chat using networks. but can i be able to send sms. just like when i press a button called send sms then a window needs to get a mobile number and text area to receive my message. if i click ok then the sms must reach the corresponding person.. can anybody tell me the overall idea and help me in completing this task???

Please search the forum there was plenty of discussion in the past...