日历大全

[java]代码库
package com.days;
 
 
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
 
public class Test {
    int startYear;
    int endYear;
public Test(int startYear, int endYear){
    this.startYear=startYear;
    this.endYear=endYear;
}
public long howDays(){
    long day=0;
    for(int year=startYear;year<=endYear;year++){
        if(year%4==0&&year%100!=0||year%100==0){
            day+=366;
        }else{
            day+=365;
        }
    }
    return day;
     
}
public long howYears(){
    return endYear-startYear+1;
}
int direction=1;
String str="";
public void timeRili(){
    long days=howDays();
    int startWeek=startYearStartMonthStartDay();
    for(int year=startYear;year<=endYear;year++){
        System.out.println("\n"+year+"年");
        int monthDay=0;
        for(int month=1;month<=12;month++){
            System.out.println("\n"+month+"月");
            switch(month){
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                monthDay=31;
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                monthDay=30;
                break;
            case 2:
                if(year%4==0&&year%100!=0||year%100==0){
                    monthDay=29;
                }else{
                    monthDay=28;
                }
                break;
                default:
                    break;
            }
            if(year==startYear&&month==1){
                System.out.println("日\t一\t二\t三\t四\t五\t六");
                for(int i=1-startWeek;i<=monthDay;i++){
                    int kongQue=i;
                    if(i<=0){
                        str+="\t";
                    }else{
                        str+=kongQue+"\t";
                    }
                    if(direction==7){
                        System.out.println(str);
                        str="";
                        direction=0;
                    }
                    direction++;
                }
            }else{
                System.out.println("日\t一\t二\t三\t四\t五\t六");
                for(int i=1;i<=monthDay;i++){
                    int kongQue=i;
                    str+=kongQue+"\t";
                    if(direction==7){
                        System.out.println(str);
                        str="";
                        direction=0;
                    }else{
                        if(year==endYear&&month==12&&i==31){
                            if(direction<7){
                                System.out.println(str);
                                str="";
                                direction=0;
                            }
                        }
                    }
                    direction++;
                }
            }
        }
    }
}
  int startYearStartMonthStartDay() {
    SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd");
    Date date=null;
    try{
        date = simpleDateFormat.parse(startYear + "-01-01");
         
    }catch (ParseException e){
        e.printStackTrace();
    }
    Calendar ca = Calendar.getInstance();
    ca.setTime(date);
    return ca.get(Calendar.DAY_OF_WEEK) - 1;
    }
}
 
 
 
 
 
package com.days;
 
import java.util.Scanner;
 
public class Main {
    public static void main(String args[]){
        System.out.println("请输入开始的年份:");
        Scanner scanner=new Scanner(System.in);
        int startYear=scanner.nextInt();
        System.out.println("请输入结束的年份:");
        int endYear=scanner.nextInt();
        Test test=new Test(startYear, endYear);
        System.out.println("多少年:"+test.howYears());
        System.out.println("多少天:"+test.howDays());
        System.out.println("开始年的第一天是星期几:"+test.startYearStartMonthStartDay());
        test.timeRili();
        Test test1=new Test(endYear, endYear);
    }
 
}
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