i am printin an output to a file
but i need all the data, but for some reason my dad gets written over
by the following at each iteration. here is my algorithm.
bascially i need a list of t(n) in a file:

public static void main (String str[]){

        long n, t;

        //timing from 0 to 5000

        for (n=1; n<5001; n++){

        long startTime = System.currentTimeMillis(); // get starting time

        LargeFact.fact(n);//call fact to run LargeFact

        long endTime = System.currentTimeMillis(); // get end time

        t = endTime - startTime; //end time minus start is total time

        System.out.println (t +"(" +n+ ")");

        // write to file tofn.txt
        // with the help of javaalmanac.com
        try{

        BufferedWriter out = new BufferedWriter(new FileWriter("tofn.txt"));
        out.write(t + "("+n+")");
        out.flush();
       out.close();
       }

       catch (IOException e){}   
       
       
}       

}