Open, save and transfer files in Java

I need to find methods that will enable me to open files using a string (i.e. fileOpen(C:\temp\theDocument.doc), save files in the same way and transfer (or copy) files between drives and directories.
The files may be of any type (.doc, .jpg, .gif, .pdf, etc).
Can anyone help me by giving example of code that will enable me to do this, I am new to Java.
Thanks,
Lindsay

Try http://java.sun.com/docs/books/tutorial/essential/io/index.html

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Open, save and transfer files in Java

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