java 日期递增

　　

    public static void main(String[] args) throws ParseException {
        // 方法一
//        Format f = new SimpleDateFormat("yyyy-MM-dd");
//
//        Date today = new Date();
//        System.out.println("今天是:" + f.format(today));
//
//        Calendar c = Calendar.getInstance();
//        c.setTime(today);
//        c.add(Calendar.DAY_OF_MONTH, 1);// 今天+1天
//
//        Date tomorrow = c.getTime();
//        System.out.println("明天是:" + f.format(tomorrow));

        // 方法二
        List<NutMap> maps = new ArrayList<NutMap>();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());
        int sum = 3;
        int i = 0;
        for (int j = 0; j < sum ; j++) {
            cal.add(cal.DATE, 1);
            if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
                sum++;
            } else {
                NutMap map = new NutMap();
                map.addv("data" + i, format.format(cal.getTime()));
                i++;
                maps.add(map);
            }
        }
        System.out.println(maps);
    }