Calendar万年历

public class PerpetualCalendar {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入年份：");
        int year = scanner.nextInt();
        System.out.print("请输入月份:");
        int month = scanner.nextInt();
        System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");

        Calendar calendar = Calendar.getInstance();

        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month-1);
        calendar.set(Calendar.DATE, 1);


        int w = calendar.get(Calendar.DAY_OF_WEEK) -1;
//        System.out.println(w);

        int actualMaximum = calendar.getActualMaximum(Calendar.DATE);

//        System.out.println(actualMaximum);

        int s = 0;
        for (int i = 1; i <= w; i++) {
            System.out.print("\t\t");
            s++;
        }

        for (int i = 1; i <= actualMaximum; i++) {
            System.out.print(i +"\t\t");
            if ((s + i)%7 == 0)
                System.out.println();
        }
//        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
//        Date time = calendar.getTime();
//        String format = simpleDateFormat.format(time);
//        System.out.println(format);
    }
}