并且在控制台能判断出是否为闰年,计算出月份的天数,距离1900年1月1日的天数,计算出月份的第一天是星期几,按照格式在控制台输出;
并且注释清楚;
希望各位帮忙理解下
可以加我QQ:249930954
或者发邮件:[email protected] [email protected]
愿与各位高手结缘!
并且注释清楚;
希望各位帮忙理解下
可以加我QQ:249930954
或者发邮件:[email protected] [email protected]
愿与各位高手结缘!
import java.util.Scanner;
public class wannianli {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub // 第一阶段:
Scanner input = new Scanner(System.in);
System.out.println("请输入你的年份:");
int year = input.nextInt();
System.out.println("请输入你的月份:");
int month = input.nextInt();
int days = 0;// 保存月份的天数
boolean ifRn = false;//
// String ifIsRn="平年";
int totalDays = 0;// 保存总天数
if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
ifRn = true;
// ifIsRn="闰年";
}
// 第二阶段:
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 2:
if (ifRn) {
days = 29;
} else {
days = 28;
}
break;
case 4:
case 6:
case 9:
case 11:
days = 30;
break;
}
// 第三阶段
// 1、计算从1900.1.1到你所输入的年份的前一年的总天数
for (int startYear = 1900; startYear < year; startYear++) {
if (startYear % 4 == 0 && startYear % 100 != 0
|| startYear % 400 == 0) {
totalDays += 366;
} else {
totalDays += 365;
}
}
// 2、计算从1月份到你所输入的月份之前的一个月的天数
for (int i = 1; i < month; i++) {
switch (i) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
totalDays += 31;
break;
case 2:
if (ifRn) {
totalDays += 29;
} else {
totalDays += 28;
}
break;
case 4:
case 6:
case 9:
case 11:
totalDays += 30;
break;
} }
totalDays += 1;
System.out.println(totalDays);
// 第四个阶段
int weekDay = totalDays % 7;
System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for (int i = 0; i < weekDay; i++) {
System.out.print("\t");
} for (int i = 1; i <= days; i++) { System.out.print(i + "\t");
if ((i+weekDay)%7==0) {
System.out.println();
}
} }}
import java.util.*;
public class N02 { public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner s = new Scanner(System.in);
System.out.println("请输入年份:");
int year =s.nextInt();
System.out.println("请输入月份:");
int month =s.nextInt(); boolean isRn;
int day=0;
//判断是否是闰年
if(year%4==0&&year%100!=0||year%400==0)
{
isRn= true;
}
else
{
isRn=false;
} int total=0;//输入年份之前总天数
for (int i = 1900; i < year; i++) {
if(i%4==0&&i%100!=0||i%400==0)
{
total=total+366;
}
else
{
total=total+365;
} }
System.out.println(total);
int monthDay=0;//输入月份之前的天数
for(int i=1;i<=month;i++)
{
switch(i)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:day=31;
break;
case 4:
case 6:
case 9:
case 11:
day=30;
break;
case 2:
if(isRn)
{
day=29;
}
else
{
day=28; } }
if(i<month)
{
monthDay=monthDay+day; }
}
System.out.println(monthDay);
total=total+monthDay;//距离1900年1月1日的天数
// System.out.println(total);
int firstDay;//存储当月第一天
int temp = 1+total%7;
if(temp==7)
{
firstDay=0;
}
else
{
firstDay=temp;
} /* 输出日历 */
System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for (int nullNo = 0; nullNo < firstDay; nullNo++) {
System.out.print("\t"); // 输出空格
}
for (int i = 1; i <= day; i++) {
System.out.print(i + "\t");
if ((total + i) % 7 == 6) { // 如果当天为周六,输出换行
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();
}
}