Output on the page in any year after 1900 simple calendar
package text3;
import java.util.Scanner;
{class MyCalendar public
public static void main (String [] args) {
String Weeks = "Su of Mo Tu We Th Fr of Sa"; // weeks list
int i, j; // loop control variable
System.out.println ( "Please at the year you want to the INPUT Research,: ");
int year = new new Scanner (System.in) .nextInt ();
// used to calculate a given year January 1 to week, the initial value of 1.1 in 1900 Monday
int Ospa3 = 1;
// from 1900 onwards, calculated for each subsequent year of 1.1 to a few weeks, until obtaining a given year on the 11th.
for (i = 1; i <year; i ++) {
// if . leap year, subsequent year on the 11th plus two days, and one day or
IF (! I. 4 == 0 &&% I = 0% 100% 400 == 0 || I)
Ospa3 + = 2;
the else
Ospa3 ++;
}
// Since seven days a week, so the final value of the remainder Ospa3 should die 7
Ospa3% = 7;
a first output calendar prompt information //
System.out.println ( "\ T \ T \ tCalender of" + year);
// list output weeks, three weeks per line
I =. 1;
the while (I <=. 3) {
of System.out.print (Weeks );
I ++;
}
System.out.println ( "");
day of the week and the number of days in month 1 // storage for three consecutive months
int spa1 = 0, spa2 = 0 , spa3 = 0, cou1 = 0, = 0 cou2, cou3 = 0;
// store the current date for three consecutive months
int DAY1 = 0, DAY2 = 0, Day3 = 0;
// determines whether the year is a leap year, the number of days in February
boolean leap = year% 4 ! == 0 && year = 100% 400% year == 0 || 0;
for (J =. 1; J <= 28; J ++) {// ???? why 28
IF ((. 1-J)% 0 == 7) {
DAY1 = 1;
DAY2 = 1;
Day3 = 1; // set the date output for three consecutive months are starting from No. 1
// set respectively in the 1st week of each month year, and month the total number of days
switch(j/7){
case 0:
spa1 = Ospa3;
cou1 = 31; //1月
spa2 = (spa1 + cou1) % 7;
cou2 = leap ?29:28; //2月
spa3 = (spa2 + cou2) % 7;
cou3 = 31; //3月
Ospa3 = spa3;
break;
case 1:
spa1 = (Ospa3 + cou3) % 7;
cou1 = 30; //4月
spa2 = (spa1 + cou1) % 7;
cou2 = 31; //5月
spa3 = (spa2 + cou2) % 7;
cou3 = 30; //6月
Ospa3 = spa3;
break;
case 2:
spa1 = (Ospa3 + cou3) % 7;
cou1 = 31; //7月
= SPA2 (SPA1 COU1 +). 7%;
cou2 = 31 is; // August
Spa3 = (SPA2 cou2 +). 7%;
cou3 = 30; // September
Ospa3 = Spa3;
BREAK;
Case. 3:
SPA1 = (+ Ospa3 cou3). 7%;
COU1 = 31 is; // October
SPA2 = (SPA1 COU1 +). 7%;
cou2 = 30; // November
Spa3 = (SPA2 cou2 +). 7%;
cou3 = 31 is; // December
break ;
}
}
// output calendar on the screen, the display line 3 weeks common output 21
for (I =. 1; I <= 21 is; I ++) {
IF ((. 1-I) /. 7 == 0) // each the output of the first row of seven a month ago
System.out.print (SPA1 - <= 0 && DAY1 <= COU1 DAY1 <10 "0" +??
DAY1 ++: "" + DAY1 ++: "");
else if((i - 1)/7 == 1)
System.out.print(spa2--<=0 && day2 <= cou2? day2 < 10?" 0"+
day2++ :" " + day2++ :" ");
else
System.out.print(spa3--<=0 && day3 <= cou3? day3 < 10?" 0"+
day3++ :" " + day3++ :" ");
if(i % 7 == 0)
System.out.print(" ");//每行中月份之间的空格
}
System.out.println(" "); //换行
}
}
}
