package hangshu;

/*

* 打印从1900年到2、year年的日历

*/

import java.util.Scanner;

public class Calender {

public static int year = Integer.MIN_VALUE;

public static int month = Integer.MIN_VALUE;

private static int[] m = {31,28,31,30,31,30,31,31,30,31,30,31};

public static void main(String[] args) {

// TODO Auto-generated method stub

InputYearAndAay(); //输入年月

printBiaotou();  //打印表头

printCanlender(); //打印日历

}

//打印日历

private static void printCanlender() {

int sum=getSumYear();

sum+=getSumMonth();

int count = sum%7;

for(int i=0;i<=count-1;i++)

System.out.print("\t");

for(int i=1;i<=m[month-1];i++)

{

System.out.print(i+"\t");    if(sum%7 == 6)     System.out.print("\n");    sum++;

}

}

//计算year总天数

private static int getSumYear(){

int sum = 0;

for(int i=1900;i

{

sum+=365;

if(Judge(year))

sum++;

}

return sum;

}

//计算month的总天数

private static int getSumMonth() {

int sum = 0;

for(int i=0;i

{

sum+=m[i];

}

if(Judge(year) && month>2)

sum++;

sum++;       //要计算1900年到year年month—1的天数

return sum;

}

//打印表头

private static void printBiaotou() {

String[] mon = {"一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"};

String[] week = {"星期一 ","星期二 ","星期三 ","星期四 ","星期五 ","星期六 ","星期日"};

System.out.println(year+"年"+"  "+mon[month-1]);      for(int i=0;i<7;i++)

System.out.print(week[i]+"\t");

System.out.println();

}

//输入年月

private static void InputYearAndAay(){

Scanner input = new Scanner(System.in);

System.out.print("请输入年份：");

year = input.nextInt();

System.out.print("请输入月份：");

month = input.nextInt();

input.close();

input = null;

}

//判断是否闰年

private static boolean Judge(int year) {

return year%4 == 0 && year%100 != 0 || year%400 == 0;

}

}