使用Scanner输入一个年月日，把该月的日历样子打印在控制台 ,当前这一天额外使用一个`*`进行标记

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public class Test5 {
    public static void main(String[] args) throws ParseException {
        Scanner sc = new Scanner(System.in);
        while (true) {
            System.out.println("输入一个年月日:");
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
            String s = sc.next();
            Date parse = sf.parse(s);
            Calendar instance = Calendar.getInstance();
            instance.setTime(parse);
            int maxDays = instance.getActualMaximum(Calendar.DAY_OF_MONTH);
            instance.set(Calendar.DATE, 1);
            int n = instance.get(Calendar.DAY_OF_WEEK);
//            System.out.println(n);
            String[] strings = new String[]{"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
            for (int i = 0; i < strings.length; i++) {
                System.out.print(strings[i] + "t");
            }
            System.out.println();
            for (int i = 1; i <= n - 1; i++) {
                System.out.print("t");
            }
            for (int i = 1; i <= maxDays; i++) {
                if (i == parse.getDate()) {
                    System.out.print(i + "*t");
                } else {
                    System.out.print(i + "t");
                    if ((i + n - 1) % 7 == 0) {
                        System.out.println();
                    }
                }
            }
            System.out.println();
        }
    }
}