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++;
		}
	}
}