Execute the Timer once a week

Question

I am using the commonJ TimerManager for sending notification emails.

Now I need to execute the Timer once a week on Monday but I am facing some problems with the configuration.

How can I set the timer for once a week on a specific day ?

        TimerManager tm = (TimerManager) ic.lookup(tm_lookup);
        SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yy:HH:mm:SS");
        String exeDate = "23-10-2013:13:00:00";
        Date date = dateFormat.parse(exeDate);
        long oneDay = 24 * 60 * 60 * 1000;
        long oneWeek = 24 * 60 * 60 * 1000 * 7;


        tm.scheduleAtFixedRate(new MyTimer(), ?, ?);

Thanks