Thread: help with sorting...(comparator)

i have a arraylist of file objects and a class of Id3Tags that get from files a couple of strings
i want to sort this list alphabeticly so i thought about two ways i think i can do
the first is
convert my arraylist<file> to an array<Id3Tag>\arraylist<Id3Tag> then create a comparator<Id3Tag>
that gets two Id3Tags and compares Id3Tags.getArtist() for the sorting i'll use
arrays.sort(<Id3Tag>a, new camparator)

the second option
is to stay with the arraylist<file> and create a comparator<file> that in it well convert both files to
Id3Tag then compare the Id3Tag.getArtist


well i started with the second option here is my comparator:

iimport java.util.*;
import java.io.*;
 
 
public  class Mp3Comparator implements Comparator<File>
{
public  int compare(File mp3File1, File mp3File2)
  {
 
    Id3Tag tag1 = new Id3Tag(mp3File1);
    Id3Tag tag2 = new Id3Tag(mp3File2);
    int result;
    result = tag1.getArtist().compareTo(tag2.getArtist());
    return result;
  }
}

and here is my main:

import java.io.*;
import java.util.*;
 
public class DemoGeter
{
public static void main(String[] args)
   {
 
    File demoFile = new File("M:/iPod_Control/Music");   
 
    FileGeter dir1 = new FileGeter();    //creates my fileGeter class that can get files from directory's  
 
    dir1.fileGet(demoFile); // get files from directory's 
 
    Id3Tag[] fileTags = new Id3Tag[dir1.bFiles.size()]; 
 
    Collections.sort(dir1.bFiles, new Mp3Comparator());   //bFile is the arraylist<file> in my fileGeter class
 
    if (!dir1.bFiles.isEmpty() && demoFile.exists() ){
    for (int h = 0 ; h < 20; h++)
      {
       fileTags[h] = new Id3Tag(dir1.bFiles.get(h));
       if (fileTags[h].getArtist()!=null){
       System.out.println(fileTags[h].getArtist());
                                          }
      }
 
                                                    }
    }
 }

if someone has the time to tell me what is wrong i'll be happy thanks....

Glad you solved your issue mdstrauss