Question

Overview: In this lab you are to write a Java program to prompt the user for an integer indicating a year and then print the calendar for that year.

Objective: This lab's objective is to exercise you with the use of Java’s control statements. You are required to use exactly one while statement, one for statement and one switch statement. You will also practice on how to use some basic input methods of the Scanner class and some formatting techniques of method printf().

Notes:

1. No arrays are allowed in this program.

2. To determine whether a year is a leap year or not:

a. If the year is a century year, the year must be divisible by 400.

b. If the year is not a century year, the year only needs to be divisible by 4.

Answer 1

If you have any doubts, please give me comment...

import java.util.Scanner;

public class Calendar {

public static void main(String[] args) {

Scanner scnr = new Scanner(System.in);

int year, start_day;

String month_name = "";

int days = 0;

System.out.printf("Enter year: ");

year = scnr.nextInt();

start_day = 0;

for (int month = 1; month <= 12; month++) {

switch (month) {

case 1:

month_name = "January";

days = 31;

break;

case 2:

month_name = "February";

days = 28;

break;

case 3:

month_name = "March";

days = 31;

break;

case 4:

month_name = "April";

days = 30;

break;

case 5:

month_name = "May";

days = 31;

break;

case 6:

month_name = "June";

days = 30;

break;

case 7:

month_name = "July";

days = 31;

break;

case 8:

month_name = "August";

days = 31;

break;

case 9:

month_name = "September";

days = 30;

break;

case 10:

month_name = "October";

days = 31;

break;

case 11:

month_name = "November";

days = 30;

break;

case 12:

month_name = "December";

days = 31;

break;

}

System.out.println("\t" + month_name + " " + year);

System.out.println("-----------------------------------");

System.out.println(" Sun Mon Tue Wed Thu Fri Sat");

if (month == 2 && (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)))

days += 1;

int j=0;

while(j<days+start_day){

if(j-start_day<0)

System.out.printf("%5c", ' ');

else

System.out.printf("%5d", j-start_day+1);

if ((j+1) % 7 == 0)

System.out.println();

j++;

}

System.out.println("\n");

start_day = (days + start_day) % 7;

}

}

}