How to convert filenames into strings

im listing a lists of files
using the method listFiles() which returns me data of type File which are actually
all files in the dir.
may i know how do i convert the filenames returned to become strings
so that i can manipulate the filenames as string format instead of file format?
thanks for any help suggested!

Im encountering a problem now before i can test the method...
This the current problem i had :
i only showed part of the codes here:
File[] listing = Dir.listFiles();
String[] lists;
for (int i=0; i < listing.length; i++)
lists[i] = new String(listing.getName());
out.print(lists[i] + "<br>");
The error i had:
variable lists might not have been initialized
lists[i] = new String(listing[i].getName());
^
1 error
I forgot how to deal with String array...
I declare as String[] lists; coz i do not know the size of the array...
how do i assign the filenames to strings?
Please kindly help..thanks a lot!

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import java.io.File;
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http://www.oracle.com/technology/oramag/code/tips2004/050304.html
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Aditi Zhankar,Amit Zhankar,Ashish Ghelani,Oracle,Oracle,Piyu Yawalkar,Piyu Yawalkar,Tom Kyte
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Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

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