date problem

[pouncer]

        Calendar cal1 = Calendar.getInstance();
        cal1.set(2010, 01, 29);
        Date date = cal1.getTime();
        SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
        String strDate = formatter.format(date);
        
        System.out.println("str date.......... " + strDate);

It prints out

str date.......... 01/03/2010

why isnt it printing 29/01/2010