package com.sxt;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Scanner;

public class CalendarDemo {
    public static void printCalendar(Calendar c, int day) {
        Scanner sc = new Scanner(System.in);
        StringBuffer sb = new StringBuffer();
        sb.append("\t日\t一\t二\t三\t四\t五\t六\t"
 
).append("\n");
        for (int i = 1; i < c.get(Calendar.DAY_OF_WEEK); i++) {
            sb.append("\t");
        }
        //獲得當前月份的天數
        int max = c.getActualMaximum(Calendar.DATE);
        //獲得當月一號對應的常量值是3
        int k = c.get(Calendar.DAY_OF_WEEK);
        for (int i = 1; i <= max; i++) {
            sb.append("\t"
 
).append(i);
            if (i == day) {
             sb.append("*");
            }
            else if((i + k) % 7 == 1) {
                sb.append("\n");
            }
        }
        System.out.println(sb.toString());
    }

    public static void main(String[] args) throws Exception {
        Scanner sc = new
 
 Scanner(System.in);
        System.out.println("請輸入日期：格式(2017-8-2)");
        String dd = sc.next();
        // 日期格式化
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date date = sdf.parse(dd);
        // 得到Calendar型別的通用物件
        Calendar c = Calendar.getInstance();
        // 將給定的date設定成日曆的時間
        c.setTime(date);
        int year = c.get(Calendar.DAY_OF_YEAR);
        System.out.println(year);
        // 獲得給定的日期的第幾號。
        int day = c.get(Calendar.DATE);
        System.out.println(day);
        // 設定當前月份的一號
        c.set(Calendar.DATE, 1);
         printCalendar(c, day);

    }
}