看看Java万年历呗，有偿
-Java万年历，含有具体要求，哪位可以抽出时间帮忙看看，🙏🏻🙏🏻
package com.yw.test2;
import java.util.Calendar;
public class MyDate
{
private int year; // 农历的年份
private int month;
private int day;
private int weekday;
private int monthday;
private boolean leap;
private Calendar mCalendar;
public int getYear()
{
return year;
}
public void setYear(int year)
{
this.year = year;
}
public int getMonth()
{
return month;
}
public void setMonth(int month)
{
this.month = month;
}
public int getDay()
{
return day;
}
public void setDay(int day)
{
this.day = day;
}
public int getWeekday()
{
return mCalendar.get(Calendar.DAY_OF_WEEK)-1;
}
public int getMonthday()
{
return mCalendar.get(Calendar.DAY_OF_MONTH);
}
public boolean isLeap()
{
Calendar c = Calendar.getInstance();
//设置为那一年的3月1日
c.set(year, 2, 1);
//将日向前减去1
c.add(Calendar.DAY_OF_MONTH, -1);
//判断是否是29天
return c.get(Calendar.DAY_OF_MONTH) == 29;
}
public MyDate(int year, int month, int day)
{
this.year = year;
this.month = month;
this.day = day;
mCalendar = Calendar.getInstance();
mCalendar.set(year,month - 1,day);
}
public MyDate()
{
mCalendar = Calendar.getInstance();
year = mCalendar.get(Calendar.YEAR);
month = mCalendar.get(Calendar.MONTH)+1;
day = mCalendar.get(Calendar.DATE);
}
public void display(){
/***
* 新建对象部分
*/
Calendar a = Calendar.getInstance();
/***
* 创建年月日部分
*/
a.set(year,month - 1,1); //我在这里1号
/**
* 判断用户输入的月份的 1号 是周几
* 是周几前面就有几个空
*/
int say1 = a.get(Calendar.DAY_OF_WEEK)-1;
System.out.print(year+"年"+month+"月"+day+"日 ");
System.out.println(isLeap() ? "闰年" : "非闰年");
System.out.println("今天周" + getWeekday() + " 本月第" + getMonthday() + "天");
System.out.println("日\t一\t二\t三\t四\t五\t六\t");
/***
* 打印一号前面个空格
*/
for (int i = 0;i<say1;i++){
System.out.print("\t");
}
/**
* 打印天数 因为月份开始是从第一天 所以i=1
* i<用户输入月份的总天数+1 i++
* 也可以这样写
* i<=用户输入的总天数 i++
*/
for (int i = 1;i<(a.getActualMaximum(Calendar.DAY_OF_MONTH)+1);i++){
/**这里是当星期几变成周日的时候换行
* 这里的逻辑是这样的
* 今天是周六然后打印1号
* 然后say1++变成了7
* 然后打印回车并且清零say1
* 0 1 2 3 4 5 6
* 日 一 二 三 四 五 六
* 在第二行打印2号*
*/
if(say1 == 7){
System.out.println();
say1 = 0;
}
System.out.print(i+"\t");
say1++;
}
}
public static void main(String[] args){
MyDate d = new MyDate(2022,8,3);
d.display();
}
}
刚帮别人写了个
完整代码如下
import java.util.Scanner;
public class Date {
private int year;
private int month;
public Date(int year, int month) {
this.year = year;
this.month = month;
}
//每个月的天数
public int monthday(int month, int year) {
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
int[] day = {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
return day[month];
} else {
int[] day = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
return day[month];
}
}
//月份总天数
public int monthdays(int month, int year) {
int totaldays = 0;
for (int i = 1; i < month; i++) {
totaldays = totaldays + monthday(i, year);
}
return totaldays;
}
//距离1900年的年份总天数
public int yeardays(int year) {
int yeardays = 0;
for (int i = 1900; i < year; i++) {
if ((i % 4 == 0 && i % 100 != 0) || i % 400 == 0) {
yeardays = yeardays + 366;
} else {
yeardays = yeardays + 365;
}
}
System.out.println(year + "年距离1900年的总天数" + yeardays);
return yeardays;
}
//输出日历
public void display() {
int totaldays = 0;
if (year > 0) {
if (month > 0 && month < 13) {
//距离1900年1月1日总天数
totaldays = monthdays(month, year) + yeardays(year);
System.out.println(year + "年" + month + "月1日距离1900年的总天数:" + totaldays);
System.out.println("\n**********" + year + "年" + month + "月的日历为**********");
System.out.println("一\t二\t三\t四\t五\t六\t日\t");
int week = 1 + totaldays % 7;
//根据1日为周几输出空格
for (int i = 1; i < week; i++) {
System.out.print(" \t");
}
//输入具体日期
for (int i = 1; i <= monthday(month, year); i++) {
System.out.print(i + "\t");
if (week == 7) {
week = 1;
//重置为星期一
System.out.println();
} else {
week++;
}
}
} else {
System.out.println("输入的月份不合法！");
}
} else {
System.out.println("输入的年份不合法！");
}
}
//主函数
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("***********************欢迎使用万年历**************************");
System.out.println("*********请选择你需要进行的操作（输入进行操作之前的数字）**********");
System.out.println("********************1.查询某年某月的日历************************");
System.out.println("********************2.结束操作*********************************");
System.out.print("\n请选择你需要进行的操作：");
int a = scanner.nextInt();
for (int i = 0; i >= 0; i++) {
switch (a) {
case 1:
System.out.print("请选择年份：");
int year = scanner.nextInt();
System.out.print("请选择月份：");
int month = scanner.nextInt();
new Date(year, month).display();
System.out.print("\n请选择你需要进行的操作：");
a = scanner.nextInt();
break;
case 2:
System.out.println("退出程序成功！");
return;
}
}
}
}
运行结果如下
***********************欢迎使用万年历**************************
*********请选择你需要进行的操作（输入进行操作之前的数字）**********
********************1.查询某年某月的日历************************
********************2.结束操作*********************************
请选择你需要进行的操作：1
请选择年份：2022
请选择月份：12
2022年距离1900年的总天数44560
2022年12月1日距离1900年的总天数:44894
**********2022年12月的日历为**********
一 二 三 四 五 六 日
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
如有帮助，请采纳，十分感谢！
运行结果（截图中只截取了2个月份的，后面月份的没截，太长了）：
Date类：
import java.util.Scanner;
public class Date {
private int mYear;
//获取年
public int getmYear() {
return mYear;
}
//设置年
public void setmYear(int mYear) {
this.mYear = mYear;
}
//判断是否是闰年
public boolean ioleapyear(int year){
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
return true;
else
return false;
}
//判断是否是闰年 无参
public boolean ioleapyear(){
return ioleapyear(mYear);
}
//返回年的累加天数
private int calMonth(int year, int month) {
int shift = 0;
if (ioleapyear(year))
shift = 1;
switch (month) {
case 0:return 0;
case 1:return 31;
case 2:return 31 + 28 + shift;
case 3:return 31 + 28 + 31 + shift;
case 4:return 31 + 28 + 31 + 30 + shift;
case 5:return 31 + 28 + 31 + 30 + 31 + shift;
case 6:return 31 + 28 + 31 + 30 + 31 + 30 + shift;
case 7:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + shift;
case 8:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + shift;
case 9:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + shift;
case 10:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + shift;
case 11:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + shift;
case 12:return 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 + shift;
default:return 0;
}
}
// 判断某天是周几
public int weekofday(int year, int mon, int day) {
// 1900-1-1 星期一
int days = 0;
if (year < 1900){
//1.计算从year+1到1900年的天数
for (int y = year + 1; y < 1900; y++) {
if (ioleapyear(y))
days += 366;
else
days += 365;
}
//2.year年的天数
if (ioleapyear(year))
days += 366 - calMonth(year, mon - 1) - day;
else
days += 365 - calMonth(year, mon - 1) - day;
int wk = days % 7;
return (7 - wk);
}
else {
//1.计算从1900年到year的天数
for (int y = 1900; y < year; y++) {
if (ioleapyear(y))
days += 366;
else
days += 365;
}
//2.year年的天数
days += calMonth(year, mon - 1) + day - 1;
int wk = days % 7 + 1;
return wk;
}
}
//显示星期几
public void disp(int wk) {
switch (wk) {
case 1:
System.out.print("星期一\n"); break;
case 2:
System.out.print("星期二\n"); break;
case 3:
System.out.print("星期三\n"); break;
case 4:
System.out.print("星期四\n"); break;
case 5:
System.out.print("星期五\n"); break;
case 6:
System.out.print("星期六\n"); break;
case 7:
System.out.print("星期日\n"); break;
}
}
// 获取月份的天数
public int monthday(int y,int mon){
int arr[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
if (ioleapyear(y))
arr[2] = 29;
return arr[mon];
}
//显示某年某月的日历
public void showRl(int year, int mon) {
int day, wk, days;
int i, j;
String weeks[] = { " ","一","二","三","四","五","六","日" };//仿windows日历显示
days = monthday(year, mon);
for (i = 1; i <= 7; i++){
if(i%2==1)
System.out.printf("%4s ", weeks[i]);
else
System.out.printf(" %4s ", weeks[i]);
}
System.out.println();
for (day = 1; day <= days; day++)
{
wk = weekofday(year, mon, day);
if (day == 1)
{
for(j=1;j<wk;j++)
System.out.print(" ");
}
if(wk != 7)
System.out.printf("%3d ", day);
else
System.out.printf("%3d\n", day);
}
System.out.println();
System.out.println();
}
//显示某年的日历
public void showYear(int year) {
int i = 1;
for (; i <= 12; i++)
{
System.out.println(year+"年"+i+"月日历：");
showRl(year, i);
}
}
}
WanNianli类（调用Date类的方法）：
import java.util.Scanner;
public class WanNianli {
//主程序
public static void main(String[] argv){
Scanner sc = new Scanner(System.in);
Date dt = new Date();
int year,mon,day;
int flag = 1;
while(flag == 1){
System.out.print("***************************************\n");
System.out.print(" 万年历 \n");
System.out.print("1.查询某年某月某日星期几\n");
System.out.print("2.判断某年是否是闰年\n");
System.out.print("3.查询某月的最大天数\n");
System.out.print("4.打印某年的全年日历\n");
System.out.print("5.打印某年某月的日历\n");
System.out.print("0.退出程序\n");
System.out.print("***************************************\n");
System.out.print("请选择：");
int choise = sc.nextInt();
switch(choise){
case 0: flag = 0;break;
case 1:
System.out.print("请输入年 月 日：");
year = sc.nextInt();
mon = sc.nextInt();
day = sc.nextInt();
int wk = dt.weekofday(year, mon, day);
dt.disp(wk);
break;
case 2:
System.out.print("请输入年份：");
year = sc.nextInt();
if (dt.ioleapyear(year))
System.out.printf("%d年是闰年\n", year);
else
System.out.printf("%d年不是闰年\n", year);
break;
case 3:
System.out.print("请输入年月：");
year = sc.nextInt();
mon = sc.nextInt();
System.out.printf("%d年%d月的最大天数是%d\n", year, mon, dt.monthday(year, mon));
break;
case 4:
System.out.print("请输入年：");
year = sc.nextInt();
dt.showYear(year);
break;
case 5:
System.out.print("请输入年月：");
year = sc.nextInt();
mon = sc.nextInt();
System.out.printf("%d年%d月日历如下：\n",year,mon);
System.out.print("---------------------------------\n\n");
dt.showRl(year,mon);
break;
}
}
}
}