Java 程序生成无日历的任意年份日历. get()函数
Java 程序用于生成任何期望的年和月的日历，让我们首先通过一个插图定额，然后再进入逻辑和程序部分。
插图:
假设用户想要获得 2011 年 4 月的日历。然后，他需要输入整数形式的年份和月份，输出将以适当的格式返回相应年份的月份日历。
程序:
第一步:以年和月作为用户的整数输入
步骤 2: 按照适当的顺序，创建 2 个数组，一个用于存储天数，另一个用于存储月数。
String day[] = { "SUN","MON","TUE","WED","THU","FRI","SAT" } ;
String month[] = { "JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER" } ;
第 3 步:初始化一个计数器变量和三个变量，日、月和年各为 1，以及一个单独的数组，用于存储可以找到月份的不同天数组合。31，30，29
int ar[] = { 31,29,31,30,31,30,31,31,30,31,30,31 } ;
第 4 步:检查闰年条件，重新初始化上述数组的值。
if(y%4==0&&y%100!=0||y%100==0)
ar[1]=29; // if the year is a leap year then store 29 for the month of february
else
ar[1]=28; // else 28
步骤 5: 当月计数达到 12 时增加年计数，当日计数达到大于相应索引的数组中的值时增加月计数
第 6 步:打印结果。
实施:
例
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to Generate Desired Calendar
// Without calendar.get() function or
// Inputting the Year and the Month
// Importing required classes
import java.io.*;
import java.util.Scanner;
// Main class
public class GFG {
// Main driver method
public static void main(String a[])
{
// Reading input by creating object of Scanner class
Scanner sc = new Scanner(System.in);
// Display message only
System.out.print("Enter the year : ");
// Reading integer input value
int yy = sc.nextInt();
// Display message only
System.out.print("Enter month : ");
// Reading integer input value
int mm = sc.nextInt();
int d = 1;
int m = 1;
int y = 1;
int dy = 1;
// Storing data and months as input
String day[] = { "SUN", "MON", "TUE", "WED",
"THU", "FRI", "SAT" };
String month[]
= { "JANUARY", "FEBRUARY", "MARCH",
"APRIL", "MAY", "JUNE",
"JULY", "AUGUST", "SEPTEMBER",
"OCTOBER", "NOVEMBER", "DECEMBER" };
// Custom array as input
int ar[] = { 31, 29, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31 };
// Till condition holds true
while (true) {
if (d == 1 && m == mm && y == yy) {
break;
}
if (y % 4 == 0 && y % 100 != 0
|| y % 100 == 0) {
ar[1] = 29;
}
else {
ar[1] = 28;
}
dy++;
d++;
if (d > ar[m - 1]) {
m++;
d = 1;
}
if (m > 12) {
m = 1;
y++;
}
if (dy == 7) {
dy = 0;
}
}
int c = dy;
if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0) {
ar[1] = 29;
}
else {
ar[1] = 28;
}
// Print the desired month of input year
System.out.println("MONTH:" + month[mm - 1]);
for (int k = 0; k < 7; k++) {
System.out.print(" " + day[k]);
}
System.out.println();
for (int j = 1; j <= (ar[mm - 1] + dy); j++) {
if (j > 6) {
dy = dy % 6;
}
}
int spaces = dy;
if (spaces < 0)
spaces = 6;
// Printing the calendar
for (int i = 0; i < spaces; i++)
System.out.print(" ");
for (int i = 1; i <= ar[mm - 1]; i++) {
System.out.printf(" %4d ", i);
if (((i + spaces) % 7 == 0)
|| (i == ar[mm - 1]))
System.out.println();
}
}
}
输出:
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