要求用户输入年份,直接输出全年的日期,自己写了一些。。希望大家指教!!
public class Mayday {
int year;
int month;
public boolean isRun(int a){
if(a%4==0&&a%100!=0||a%400==0){
return true;
}else{
return false;
}
}
public int yday(){
int sum=0;
for(int i=1900;i<year;i++){
if(isRun(i)){
sum+=366;
}else{
sum+=365;
}
}return sum;
}
public int mday(){
int sum1=0;
for(int i=1;i<month;i++){
switch(i){
case 6:
case 4:
case 9:
case 11:
sum1+=30;
break;
case 2:
if(isRun(i)){
sum1+=29;
}else{
sum1+=28;
}
break;
default:
sum1+=31;
break;
}
}
return sum1;
}
public void shou(){
int a=yday();
int b=mday();
int zday=(a+b+1)%7;
System.out.println("日\t"+"一\t"+"二\t"+"三\t"+"四\t"+"五\t"+"六\t");
for(int i=0;i<zday;i++){
System.out.print(" \t");
}
int sum1=0;
switch(month){
case 6:
case 4:
case 9:
case 11:
sum1+=30;
break;
case 2:
if(isRun(month)){
sum1+=29;
}else{
sum1+=28;
}
break;
default:
sum1+=31;
break;
}
for(int i=1;i<=sum1;i++){
System.out.print(i+"\t");
if((i+zday)%7==0){
System.out.println();
}
}
}}
public class Mayday {
int year;
int month;
public boolean isRun(int a){
if(a%4==0&&a%100!=0||a%400==0){
return true;
}else{
return false;
}
}
public int yday(){
int sum=0;
for(int i=1900;i<year;i++){
if(isRun(i)){
sum+=366;
}else{
sum+=365;
}
}return sum;
}
public int mday(){
int sum1=0;
for(int i=1;i<month;i++){
switch(i){
case 6:
case 4:
case 9:
case 11:
sum1+=30;
break;
case 2:
if(isRun(i)){
sum1+=29;
}else{
sum1+=28;
}
break;
default:
sum1+=31;
break;
}
}
return sum1;
}
public void shou(){
int a=yday();
int b=mday();
int zday=(a+b+1)%7;
System.out.println("日\t"+"一\t"+"二\t"+"三\t"+"四\t"+"五\t"+"六\t");
for(int i=0;i<zday;i++){
System.out.print(" \t");
}
int sum1=0;
switch(month){
case 6:
case 4:
case 9:
case 11:
sum1+=30;
break;
case 2:
if(isRun(month)){
sum1+=29;
}else{
sum1+=28;
}
break;
default:
sum1+=31;
break;
}
for(int i=1;i<=sum1;i++){
System.out.print(i+"\t");
if((i+zday)%7==0){
System.out.println();
}
}
}}
package DK_Date;import java.util.Date;public class DK_Date { public int Year; // 年份
public int Month; // 月份
public int Day; // 日期
public int Days; // 当月有几天
public int Week; // 当月第一天为周几 public void getCurDate() {
Date date = new Date(); this.Year = date.getYear() + 1900;
this.Month = date.getMonth() + 1;
this.Day = date.getDate();
} /**
* 判断是否为闰年
*
* @param year
* @return 如果为真则为闰年,反之为平年
*/
public boolean isRun(int year) {
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0 )
return true;
return false;
} /**
* 计算当月天数
*
* @param month
* 月份
* @param year
* 年份
*/
public void getDays(int month, int year) {
switch (month) {
case 2:
if (isRun(year))
this.Days = 29;
else
this.Days = 28;
break;
case 4:
case 6:
case 9:
case 11:
this.Days = 30;
break;
default:
this.Days = 31;
break;
}
} /**
* 计算当月第第一天是一年中的第几天
*
* @param month
* @param year
* @return
*/
public int getYearDays(int month, int year) {
int days = 1;
for (int i = 1; i < month; i++) {
switch (i) {
case 2:
if (isRun(year))
days += 29;
else
days += 28;
break;
case 4:
case 6:
case 9:
case 11:
days += 30;
break;
default:
days += 31;
break;
}
}
return days;
} /**
* 计算1900年到当年1月1日经过了多少天
*
* @param year
* 当前年份
* @return
*/
public int getYearsDay(int year) {
int days = 0;
for (int i = 1900; i < year; i++) {
if (isRun(i))
days += 366;
else
days += 365;
}
return days;
} /**
* 计算当月第一天为周几
*
* @param year
* 年份
* @param month
* 月份
*/
public void getWeek(int year, int month) {
int days = getYearsDay(year) + getYearDays(month, year);
this.Week = days % 7 == 0 ? 7 : days % 7;
}
}package DK_Date;import java.util.Scanner;public class DateUI { private DK_Date date;
Scanner scanner = new Scanner(System.in); public void initial() {
date = new DK_Date();
date.getCurDate();
date.getWeek(date.Year, date.Month);
date.getDays(date.Month, date.Year);
} public void show() {
System.out.println("◆◇◆◇◆◇ DK 万年历 ◆◇◆◇◆◇\n");
System.out.println("北京时间:" + date.Year + "年" + date.Month + "月"
+ date.Day + "日\n");
getShow(date.Week, date.Days);
while (true) {
System.out.println("\n请输入年份:");
date.Year = scanner.nextInt();
System.out.println("请输入月份:");
date.Month = scanner.nextInt();
date.getWeek(date.Year, date.Month);
date.getDays(date.Month, date.Year);
getShow(date.Week, date.Days);
}
} public void getShow(int week, int days) {
System.out.println("周日\t周一\t周二\t周三\t周四\t周五\t周六\t");
if (week != 7) {
for (int i = 0; i < week; i++) {
System.out.print("\t");
}
}
for (int i = 1; i <= days; i++) {
System.out.print(i + "\t");
if (i % 7 == 7 - week) {
System.out.println();
}
}
}
}package DK_Date;public class Start { public static void main(String[] args)
{
DateUI date = new DateUI();
date.initial();
date.show();
}
}