How To Parse The Command Line?

Hello,dear. When I writing a C/S mode application,which performing download and upload files between the FTP server and the clients, I encountered the problem of parsing the command line.
I intend to download file from the server side ,using this following format ,which is composed by four arguments:
ftp>receive server's IPaddress portnumber filename
The problem is I don't know how to parse the command line and store them to some objects and using it.
I'm right here waiting for the nice problem-shooter.
Thanks for reading my poor expression.

In your console application main class
public static void main(String[] args)
// code
args is a sting array with the command
line itemsI think you missed the point or forgot the ":-)". This is the "Socket", not the "New to Java" forum.

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Attach Image:
[Image T.Code|http://www.freeimagehosting.net/uploads/eab3b6a03c.jpg]
When I created a service using the T.Code SICF for the T.Code , I can hide buttons and the filed command line using
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[Image T.Code|http://www.freeimagehosting.net/uploads/eab3b6a03c.jpg]
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I think that the command :
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Only can be used if I create a service using the T.Code SICF .
Best Regards
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