万年历

[java]代码库

package calendar;
 
import java.util.Scanner;//日历项目
public class RiLi{
    public static void main(String[] args){
        Scanner A=new Scanner(System.in);
        System.out.println("请输入年份：");
        int year=A.nextInt();
        System.out.println("请输入月份：");
        int month=A.nextInt();
        int sum=0;
        for(int i=1900;i<year;i++){
            if(i%4==0&&i%100!=0||i%400==0){
                sum=sum+366;
            }else{
                sum=sum+365;
            }
        }
        for(int i=1;i<month;i++){
            if(i==2){
                if(year%4==0&&year%100!=0||year%400==0){
                    sum=sum+29;}
                else{
                    sum=sum+28;
                }
            }else{
                if(i==4||i==6||i==9||i==11){
                    sum+=30;
                }else{
                    sum+=31;
                }
            }
        }
        sum=sum+1;
        int wekday=sum%7;
        System.out.println("日\t一\t二\t三\t四\t五\t六");
        for(int i=1;i<=wekday;i++){
            System.out.print("\t");
        }
        int f=0;
        if(month==4||month==6||month==9||month==11){
            f=30;}
        if(month==1||month==3||month==5||month==7||month==8||month==10||month==12){f=31;}
        if(month==2){
            if(year%4==0&&year%100!=0||year%400==0){f=29;}
            else{f=28;}
        }
        for(int i=1;i<=f;i++){
            if(sum%7==6){
                System.out.print(i+"\n");
            }else{
                System.out.print(i+"\t");
            }
            sum++;
        }
    }
}