PLEASE LOOK OVER THE WHOLE QUESTION ESPECIALLY THE SAMPLE OUTPUT AND THE SHELL.
ID: 3813319 • Letter: P
Question
PLEASE LOOK OVER THE WHOLE QUESTION ESPECIALLY THE SAMPLE OUTPUT AND THE SHELL.
Edit: When I post from word to chegg, it sometimes messes up the formating of the sample output, but it should give you a general idea what it looks like.
I have posted this question a few times already, but no one has done it like the instructions ask.
Problem: Write a program that prints the calendar for a given year. The user will be promoted to choose the calendar for the month or the year. If the year is selected, then the calendar for the given year will be displayed. If the month is selected then the user will be prompted to enter the month, then the calendar for the given month will be displayed.
Top down design: Break down the problem into sub problems and state what you will achieve for each of the sub problems First we need to break down into two sub problems.
Get the user’s input
a. Read the input(year)
Print the calendar
Print the calendar for the year
a. Print the calendar for each month of the year
i. Print the title for each month in the year.
Print the month and the year
Print “Sunday Monday Tuesday Wednesday Thursday Friday Saturday”.
ii. Print the body for the month
Get the number of the days for each month of the year
Need to know if the year is a leap year or not. A year is a leap year if it is divisible by 400 or if the year is divisible by 4 but not divisible by 100
Get the number for the first day in the month. For example, November 1st was on a Saturday which is the 6th day of the week assuming that Sunday is the zero day of the week. To figure out which day is the first day of the month you need to do the following:
a. Calculate the total number of days since 1800 up to the month of the year that you are trying to print the calendar
Calculate the total number of days since 1800 up to one year prior to the given year. Note that you also need to check if the year is a leap year or not. For example, if the user enters 2014, we need to calculate how many days from 1800 to 2013. Need a for loop and in the for loop you need to check if the year is a leap year.
Add the total days from the beginning of the given year up to the month. For example, if we are trying to print the calendar for the March 2014, then we need to add the total number of days in Jan and Feb to whatever we calculated in i.
Whatever you get from ii add 3 to it (January
1800 was on a Wednesday) iv. Calculate the remainder of iii divided by 7, this result will tell you that first days of month is Sun or Mon or Tue or Wed or Thu or Fri or Sat.
Determine the date for thanksgiving for November.
Now that you know the number of the days in the month and the day for the first day of the month you can print the calendar.
Now you can write a method that accepts the number of the days in the month and the first day of the month, then print the body
1. If the first day of the month is for example on a Saturday which is the 6th day of the week then you need to output 5 blanks “ “.
You start printing from 1 to the last day of the month.
Add appropriate codes in the main method to give the user the option of displaying the calendar for the year or the month. Based on the user’s option display the result.
A program shell has been provided for you.
Here is a sample output
Here is the sample output:
Enter a valid year after 1800: 2006 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: n
Invalid choice
Do you have another year to print the calendar:yes/no-->yes Enter a valid year after 1800: 2006 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: m
*Enter the month of the year1..12-->90
*Enter the month of the year1..12-->56
*Enter the month of the year1..12-->5
May 2006
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
Do you have another year to print the calendar:yes/no-->yes Enter a valid year after 1800: 2017 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: y
January 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
February 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28
March 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
April 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30
May 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
June 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30
July 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
August 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
September 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
October 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
November 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
**Thanksgiving day is on the 23th
December 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Do you have another year to print the calendar:yes/no-->yes Enter a valid year after 1800: 2018 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: m
*Enter the month of the year1..12-->7
July 2018
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Do you have another year to print the calendar:yes/no-->yes Enter a valid year after 1800: 2006 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: m
*Enter the month of the year1..12-->2
February 2006
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28
Do you have another year to print the calendar:yes/no-->yes Enter a valid year after 1800: 1999 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: y
January 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
February 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28
March 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
April 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30
May 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
June 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30
July 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
August 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
September 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
October 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
November 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30
**Thanks giving day is on the 25th
December 1999
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
Do you have another year to print the calendar: yes/no-->yes Enter a valid year after 1800: 2017 Select one of the following options:
To get the month calendar press m or M
To get the calendar for the year enter y or Y
Enter your choice: m
*Enter the month of the year1..12-->11
November 2017
----------------------------
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
**Thanks giving day is on the 23th
Do you have another year to print the calendar: yes/no-->no
Good Bye
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Here is the Shell to the program. It is incomplete and needs to be filled in. Using the Sample Output fill in the rest. Please do not just create just a regular calender by inputing the year. It needs to follow how the sample output looks like.
Explanation / Answer
Here is the code for you, which works mostly similarly except the main():
import java.util.Scanner;
public class PrintCalendarShell
{
public static void main(String[] args)
{
Scanner kb = new Scanner(System.in);
//prompt the user to enter the year
boolean repeat = true;
int year, month;
char choice;
while (repeat)//repeat as long as the user wants to
{
System.out.print("1. Print Year. 2. Print Month. ");
System.out.print("Enter your choice: ");
int choice = kb.nextInt();
if(choice == 1)
{
// Prompt the user to enter year
System.out.print("Enter full year (e.g., 2016): ");
year = kb.nextInt();
for(int i = 1; i <= 12; i++)
printMonth(year, i);
}
else if(choice == 2)
{
// Prompt the user to enter month
System.out.print("Enter full year (e.g., 2016): ");
year = kb.nextInt();
System.out.print("Enter the month: ");
month = kb.nextInt();
// Print calendar for the month of the year
printMonth(year, month);
}
else
System.out.println("Invalid choice.");
/*System.out.print("Enter a valid year after 1800: ");
year = kb.nextInt();
System.out.println("Select one of the following options:");
System.out.println("To get the month calendar press m or M");
System.out.println("To get the calendar for the year enter y or Y");
System.out.print("Enter your choice: ");
choice = sc.next();
while(choice != 'M' && choice != 'm' && choice != 'y' && choice != 'Y')
{
System.out.print("Invalid choice Do you have another year to print the calendar:yes/no--> ");
if()
}*/
}
}
/*this method prints the body of the calender for the given month*/
public static void printMonth(int year, int month)
{
//call the method printTitle with the values year and month
printMonthTitle(year, month);
//call the method printMonthBody with the values year and month
printMonthBody(year, month);
}
/*this method prints the title of the days in each week(sunday Mon Tues Wed Thur Fir Sat)*/
public static void printMonthTitle(int year, int month)
{
//output the title for each month of the year
System.out.println(" " + getMonthName(month) + " " + year);
System.out.println("-----------------------------");
System.out.println(" Sun Mon Tue Wed Thu Fri Sat");
}
/*this method outputs the calender for each month of the year*/
public static void printMonthBody(int year, int month)
{
//call the method getStartDay to get the start day for each month of the year
int startDay = getStartDay(year, month);
//call the method print to print the calender for the month and pass the first day of the month as the parameter
print(startDay, year, month);
}
/*prints the calendar for the given month*/
public static void print(int startDay, int year, int month)
{
// call the method getNumberOfdaysInMonth to finde out the number of the days in the month
int numberOfDaysInMonth = getNumberOfDaysInMonth(year, month);
//use a for loop to print spaces up to the start day for each month
int i = 0;
for (i = 0; i < startDay; i++)
System.out.print(" ");
//use another for loop to print the rest of the days in the calender
for (i = 1; i <= numberOfDaysInMonth; i++)
{
if (i < 10)
System.out.print(" " + i);
else
System.out.print(" " + i);
if ((i + startDay) % 7 == 0)
System.out.println();
}
System.out.println();
//if the month is November calculate the thanksgiving day and output }
}
/*this method calculates the date for thanksgiving, you need to use
a switch statment. Thanksgiving is always on fourth Thursday of November.
depending on the first day of the month a constant needs to be added to 3 * 7
since we have three full weeks. if the first day of the month is on a
Sunday then for that month thanksgiving will be 5 + 3 *7. */
public static int thanks(int startDay)
{
return 0;
}
/*you can use this method from you previous HW */
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;
}
/*this method returns the atrt day of the month*/
public static int getStartDay(int year, int month)
{
//call the method getTotalNumberOfDays and store it in a variable called start
//add 3 to the variable start
//return start % 7
int startDay1800 = 3;
int totalNumberOfDays = getTotalNumberOfDays(year, month);
// Return the start day
return (totalNumberOfDays + startDay1800) % 7;
}
/*returns the total number of the days up to the given month in the given year */
public static int getTotalNumberOfDays(int year, int month)
{
int total = 0;
// Get the total days from 1800 to year - 1
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;
}
/*this method return the number of the days in the given month of the
given year. take leap year into consideration*/
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;
else if (month == 4 || month == 6 || month == 9 || month == 11)
return 30;
else if (month == 2)
return isLeapYear(year) ? 29 : 28;
return 0; // If month is incorrect
}
/*returns true if the given year is leap, false otherwise*/
public static boolean isLeapYear(int year)
{
//refer to the HW description
return year % 400 == 0 || (year % 4 == 0 && year % 100 != 0);
//return false;
}
}
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.