PrintWriter fileOut = null;
        try {
            //
            // Set up the output file
            fileOut = 
                new PrintWriter(new BufferedWriter(new FileWriter(args[1])));
        }
        catch(Exception e1) {
            System.err.println("Output file "+args[1]+" is not accessible");
            System.exit(1);
        }
        
        //
        // Now we are ready to output the data values to output file.
        // But first, we need to output the header line
        // "; Sample Rate sampleRate"
        //
        fileOut.println("; Sample Rate " + sampleRate);
        
        // Since the first column consists of numbers which start
        // at 0 and increase by 1/sampleRate every time slice, we'll
        // just use numSteps to recalculate these numbers.
        int numSteps = 0;
        
        // Finally, we print the values in reverse order (by popping
        // them off the stack). The first column consists of numbers
        // which start at 0 and increase by 1/sampleRate per row, so
        // we'll use numSteps/sampleRate to recalculate the appropriate
        // values. Uniform spacing will be accomplished by printing a tab.
        while (!s.isEmpty()) {
            fileOut.println(numSteps / sampleRate + "\t" +
                            s.pop());
            numSteps++;
        }
        
        //
        // Close the output file
        //
        fileOut.close();