Renaming Program

Question

Hi,
I'm a student in Computer Science major; currently taking CS 2; java.
Now; this isn't any class project. I just wanted to make a program to assist myself in managing my music/video and other files.
I'm trying to make myself a program to assist me in renaming files.
Basically a file renamer that works according to my input.
Basically what it will be is; ask the user for input for the "new" file name, and just
rename it.
Now, i can take in user input from JOptionPane or etc... and can put it together,
but how can i access my "files" so that i can rename them using my input?
I want my design to be like so: The program asks the user for how many files to rename and the location. Then asks me for new filename; there will be like a generic way of renaming, forexample: if i want rename files in a folder that are all songs of say Jimi Hendrix;
then i want to tell the program to use the following as a generic model: "Jimi Hendrix - [song number; increment] - [song title input by me]"
Now i know there are softwares that do that; but i want to make a program that is completely fitting to my needs; so that i don't have to use multiple programs. Plus the joy of using a program i created myself.
So should i go about using arrays??? or lists?? or what..
need your opinions on how to go about this program..
would like to make it really simple and easy to use.
Not too much to complicate.
Thanks for reading; and i appreciate your help.

Answer 1

Hm. I did look at file class and it seems to be the thing i am looking for.
But since i am, relatively a beginner; could you point me to some "examples" of uses of the file class???
and i still can't figure out how i can tell java to "look" into a folder, and make changes.
like i tried doing the following to get myself familiarised with the File class.
import java.lang.*;
import java.io.*;
import java.awt.*;
import javax.swing.*;
public class Test
public static void main (String[] args)
     String user = JOptionPane.showInputDialog("Enter");
          File file = new File(user);
          //file.createNewFile();
          file.mkdir();
          // -> doesn't work;:::: System.out.print(file.getCanonicalPath());
          //          JOptionPane.showMessageDialog();
          //file.delete();
          //file.renameTo(x);
          //System.out.println(file.toString());
          //System.out.println(file.getName());
The getCanonicalPath() method, when used gives me an error:
unreported exception java.io.IOException; must be caught or declared to be thrown
unsure^.
Thanks for help.