java万年历程序如何编写？

发布网友 发布时间：2022-04-22 08:56

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热心网友 时间：2023-07-07 06:05

花了半个小时写了一个望采纳给好评。
import java.util.Scanner;

public class PrintCalendar {
/** Main method */
public static void main(String[] args) {
Scanner input = new Scanner(System.in);

// Prompt the user to enter year
System.out.print("Enter full year (e.g., 2001): ");
int year = input.nextInt();

// Prompt the user to enter month
System.out.print("Enter month in number between 1 and 12: ");
int month = input.nextInt();

// Print calendar for the month of the year
printMonth(year, month);
}

/** Print the calendar for a month in a year */
public static void printMonth(int year, int month) {
// Print the headings of the calendar
printMonthTitle(year, month);

// Print the body of the calendar
printMonthBody(year, month);
}

/** Print the month title, e.g., May, 1999 */
public static void printMonthTitle(int year, int month) {
System.out.println(" " + getMonthName(month)
+ " " + year);
System.out.println("-----------------------------");
System.out.println(" Sun Mon Tue Wed Thu Fri Sat");
}

/** Get the English name for the month */
public static String getMonthName(int month) {
String monthName = "";
switch (month) {
case 1: monthName = "January"; break;
case 2: monthName = "February"; break;
case 3: monthName = "March"; break;
case 4: monthName = "April"; break;
case 5: monthName = "May"; break;
case 6: monthName = "June"; break;
case 7: monthName = "July"; break;
case 8: monthName = "August"; break;
case 9: monthName = "September"; break;
case 10: monthName = "October"; break;
case 11: monthName = "November"; break;
case 12: monthName = "December";
}

return monthName;
}

/** Print month body */
public static void printMonthBody(int year, int month) {
// Get start day of the week for the first date in the month
int startDay = getStartDay(year, month);

// Get number of days in the month
int numberOfDaysInMonth = getNumberOfDaysInMonth(year, month);

// Pad space before the first day of the month
int i = 0;
for (i = 0; i < startDay; i++)
System.out.print(" ");

for (i = 1; i <= numberOfDaysInMonth; i++) {
System.out.printf("%4d", i);

if ((i + startDay) % 7 == 0)
System.out.println();
}

System.out.println();
}

/** Get the start day of month/1/year */
public static int getStartDay(int year, int month) {
final int START_DAY_FOR_JAN_1_1800 = 3;
// Get total number of days from 1/1/1800 to month/1/year
int totalNumberOfDays = getTotalNumberOfDays(year, month);

// Return the start day for month/1/year
return (totalNumberOfDays + START_DAY_FOR_JAN_1_1800) % 7;
}

/** Get the total number of days since January 1, 1800 */
public static int getTotalNumberOfDays(int year, int month) {
int total = 0;

// Get the total days from 1800 to 1/1/year
for (int i = 1800; i < year; i++)
if (isLeapYear(i))
total = total + 366;
else
total = total + 365;

// Add days from Jan to the month prior to the calendar month
for (int i = 1; i < month; i++)
total = total + getNumberOfDaysInMonth(year, i);

return total;
}

/** Get the number of days in a month */
public static int getNumberOfDaysInMonth(int year, int month) {
if (month == 1 || month == 3 || month == 5 || month == 7 ||
month == 8 || month == 10 || month == 12)
return 31;

if (month == 4 || month == 6 || month == 9 || month == 11)
return 30;

if (month == 2) return isLeapYear(year) ? 29 : 28;

return 0; // If month is incorrect
}

/** Determine if it is a leap year */
public static boolean isLeapYear(int year) {
return year % 400 == 0 || (year % 4 == 0 && year % 100 != 0);
}
}追问首先非常感谢大神~~~另外能设计一个图形用户界面吗？还有能输入阳历查找出阳历吗？显示出查找日期与当前日期相差多少天？

追答界面你还看不上啊，那得花些时间啊。很累的。

热心网友 时间：2023-07-07 06:05

JSP源码论坛里面很多啊