public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException
    {
        int i = 0;
        int asc;
        String text;
        File status = new File("textfil.krypt");
        char [] tabb = new char[(int)status.length()];
        FileReader las = new FileReader("textfil.krypt");
        FileWriter skriv = new FileWriter("textfil.txt");
        Timer t = new Timer();

        long start = System.nanoTime();
        las.read(tabb);

        for(i = 0; i < tabb.length; i++)
        {
           tabb[i]--;
        }

        skriv.write(tabb);
        long stop = System.nanoTime();

        las.close();
        skriv.close();

        System.out.println("Dekrypteringen tog " + (stop - start) + " nanosekunder");
    }

}