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SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd");
        Date date = formater.parse("2013-6-10");
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        int dayForWeek = 0;  
        if(c.get(Calendar.DAY_OF_WEEK) == 1){  
            dayForWeek = 7;  
        }else{  
            dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 1;  
        }  
        System.out.println(dayForWeek);