How to duplicate a file in a directory to another directory?

I am a student just has just learn some basic Java programming...May i know how to duplicate a file in a directory to another directory?
How to start in doing this?
Thank You

I was suggesting to use java to send commands to the system shell so to speak....
I don't know of a way to do this... under the File class you can delete files, but there is no provision to copy Files so to speak....
one way would to be to open the file you want to copy with a file reader, and then write it all out to your new file.
see http://java.sun.com/j2se/1.3/docs/api/java/io/FileReader.html for information of FileReaders

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>
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How to duplicate a file in a directory to another directory?

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