今天找老师要资料，自己做的万年历

import java.util.Scanner;
import java.util.Calendar;
   public class Demo7{
       public static void main(String[] args){
       Scanner input=new Scanner(System.in);
       System.out.println("请输入年份：");
        int year=input.nextInt();
       System.out.println("请输入月份:");
        int mouth=input.nextInt();
        int day=0;
        int count=0;
        Calendar c=Calendar.getInstance();
       c.set(year,mouth-1,1);
      
       
      if((year%4==0&&year%100==0)||year%400==0){
            if(mouth==2){
                day=29;
           }else if(mouth==4||mouth==6||mouth==9||mouth==11){
                               day=30;
           }else{
                                day=31;
           }
     }else{
             if(mouth==2){
                        day=28;
            }else if(mouth==4||mouth==6||mouth==9||mouth==11){
                               day=30;
            }else{
                                day=31;
            }
           }
               System.out.println("日"+" 一"+" 二"+" 三"+" 四"+" 五"+" 六");
             int week=c.get(Calendar.DAY_OF_WEEK);
            for(int n=1;n<week;n++){
             System.out.print(" "+"  ");
                    count++;
                     }
          
          for(int i=1;i<day;i++){
                 if(i<10){
                     System.out.print(" "+i+" ");
                        count++;
                          }else{
                      System.out.print(" "+i);
                          count++;
                          }
            if(count%7==0){
                        System.out.println(" ");
                    }
              }
                 
      
         
    }
}