Writing to text file using an executable Jar

[frodo5654]

Hey guys I'm new here so sorry if this is supposed to be put somewhere else, but...
My friend and i have been trying to take a simple program of ours and make it an executable jar file so we can run it on multiple computers(obviously). The problem we have been having is whenever we export our program into a jar(via Eclipse) the jar file won't create/write to a text file. When I run the program normally through Eclipse and not the jar, it creates the text file and writes to it just fine so was wondering if i was doing something wrong...

import java.io.*;

public class Main {

	public static void main(String[] args)
	{
		File file1 = new File(System.getProperty("user.home") + "\\Desktop\\Groups.txt");
		String[] students = new String[]{"Hurley", "Trad", "Kelsey", "Colangelo", "Curry", "Bolton", "Horine", "Ruth", "Cardona", "Bacelli", "Bosko", "Brannon", "Delacruz", "Furlow", "Harden", "Humes", "Kolos", "Long", "Lowman", "Lundstrom", "Oliver", "Race", "Rodriguez", "Stokes", "Weld", "Windham"};
		shuffle(students);
		int j = 1;
		try {
   			BufferedWriter out = new BufferedWriter(new FileWriter(file1));
			for (int i = 0; i<26; i+=2)
			{
				out.write(""+j+"\t"+students[i]+"\t\t\t"+students[i+1]);
				out.newLine();
				j++;
			}
			out.close();
		}catch (IOException e){
				e.printStackTrace();
		}
	}
    public static void exch(String[] a, int i, int j) {
        String swap = a[i];
        a[i] = a[j];
        a[j] = swap;
    }
    public static void shuffle(String[] a) {
        int N = a.length;
        for (int i = 0; i < N; i++) {
            int r = i + (int) (Math.random() * (N-i));   // between i and N-1
            exch(a, i, r);
        }
    }
}

And before anyone says anything about the retarded shuffle^^ i didn't write this my buddy knows nothing about Collections.shuffle(ArrayList) XD

[Junky]

the jar file won't create/write to a text file.

So what does it do instead? Do you get any error messages?