How to put file from a legacy system to SAP through FTP

Hi
I want to put one file which will be comming from legacy system to a folder of application server of the SAP system through xi.The protocol i want to use is FTP.
But im not sure about the configuration to be done for putting the file directly to SAP app server.
Anybody having idea what configuration i need to do in the SAP side to put the file into the app server directly through FTP.
Thanks
Debraj

Hi Debraj,
Try if these links help you solve your problem:
http://help.sap.com/saphelp_bw31/helpdata/en/4e/2ba038b81e897ce10000009b38f8cf/content.htm
http://www.sapfans.com/sapfans/saptips.htm#prog
http://help.sap.com/saphelp_nw04/helpdata/en/a4/db833d4c47ea4ea1a9b7af3c535ff2/content.htm
Cheers,
Chandra

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import java.io.*;
import java.net.*;
class Client
public static void main(String args[]) throws Exception
String sentence;
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DATA lv_dir TYPE epsf-epsdirnam.
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DATA lv_package_len TYPE i.
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