HELP JAVA ASSIGNMENT! So here is my programming assignment: \"Write a program in
ID: 3932729 • Letter: H
Question
HELP JAVA ASSIGNMENT!
So here is my programming assignment: "Write a program in Java to generate the entire calendar for one year. The program must get two values from the user: : (1) the year and (2) the day of the week for January 1st of that year. "
I have everything in my code working except the numbers on the calendar don't line up like they should, so my JUnit test is wrong. Here's a picture: It is supposed to look like the left side. I somehow have extra spaces.
When i click on the JUnit test. It gives me the following (sorry some of the numbers got cut off):
This is my code ( The day of the week for January 1st is needed so that you know where to start the calendar. The user should enter 0 for Sunday, 1 for Monday, … or 6 for Saturday. To actually print the calendar, a SINGLE method that prints out the calendar for one month must be used and then called 12 times from main(), once for each month in the year. To check for a leap year we will need to write another method that takes the year as a parameter and returns true if it’s a leap year, or false otherwise.)
:
public class CalendarAssignment {
/**
* Error to output if year is not positive
*/
static final String E_YEAR = "The year must be positive!";
/**
* Error to output if the day is not between 0 and 6
*/
static final String E_DAY = "The day of January 1st must be between 0 and 6!";
/**
* Determines if an input is a leap year
*
* @param year
* year in question
* @ereturn true if a leap year
*/
public static boolean isLeapYear(int year) {
boolean leapyear = false;
if(year%4 == 0) {
if(year%100 == 0){
if(year%400 == 0){
return !leapyear;
};
}else{
return !leapyear;
}
}
return leapyear; // TODO: replace with your code
}
/**
* Outputs a month to the console
*
* @param month
* title
* @param startDay
* 0=Sunday ... 6=Saturday
* @param numDays
* number of days in the month
* @return day of the week of the last day of the month
*/
public static int printMonth(String month, int startDay, int numDays) {
System.out.println(month);
int nextLine=1;
for(int j=numDays,k=1;j>0;){
if(startDay>0){
for(int i=0;i System.out.printf(" ");
nextLine++;
}
startDay=0;
}else{
System.out.printf(k + " ");
nextLine++;
k++;
j--;
}
if((nextLine >7)){System.out.println(); nextLine=1;}
}
return (nextLine-1);
// TODO: replace with your code
}
/**
* Program execution point: input year, day of the week (0-6) of january 1
* output calendar for that year
*
* @param args
* command-line arguments (ignored)
*/
public static void main(String[] args) {
String[] months = {"January", "February", "March", "April", "May",
"June", "July", "August", "September", "October", "November",
"December" };
int[] total_Days_In_Months = {31,28,31,30,31,30,31,31,30,31,30,31};
Scanner input = new Scanner(System.in);
System.out.print("Enter the year: ");
int year = input.nextInt();
System.out.print("Enter the day of the week of January 1st (0=Sunday, 1=Monday, ... 6=Saturday): ");
if(year <= 0) {
System.out.print(E_YEAR);
System.out.println();
System.exit(0);
}
int day_of_week = input.nextInt();
if(day_of_week <0 || day_of_week >6)
{
System.out.print(E_DAY);
System.out.println();
System.exit(0);
}
if(isLeapYear(year)){
total_Days_In_Months[1] = 29;
}
for(int j=0;j int endDay = day_of_week;
day_of_week = printMonth(months[j], endDay, total_Days_In_Months[j]);
System.out.println();
}
}
}
Explanation / Answer
/**
* Determines if an input is a leap year
*
* @param year year in question
* @return true if a leap year
*/
public static boolean isLeapYear(int year) {
return false;
}
/**
* Outputs a month to the console
*
* @param month title
* @param startDay 0=Sunday ... 6=Saturday
* @param numDays number of days in the month
* @return day of the week of the last day of the month
*/
public static int printMonth(String month, int startDay, int numDays){
System.out.println(month);
int dayOfWeek = 10;
//Your code goes here
System.out.println("Print: " + month);
System.out.println("");
return dayOfWeek;
}
/**
* Program execution point:
* input year, day of the week (0-6) of january 1
* output calendar for that year
*
* @param args command-line arguments (ignored)
*/
public static void main(String[] args) {
@SuppressWarnings("resource")
final Scanner input = new Scanner(System.in);
System.out.print("Enter the year: ");
final int year = input.nextInt();
System.out.print("Enter the day of the week of January 1st (0=Sunday, 1=Monday, ... 6=Saturday): ");
final int firstDay = input.nextInt();
if (year<=0) {
System.out.println("The year must be positive!");
System.exit(0);
}
if (firstDay<0 || firstDay>6) {
System.out.println("The day of January 1st must be between 0 and 6!");
System.exit(0);
}
final int numFebDays;
if (isLeapYear(year)) {
numFebDays = 29;
} else {
numFebDays = 28;
}
int lastDayOfWeek;
lastDayOfWeek = printMonth("January", firstDay, 31);
lastDayOfWeek = printMonth("February", lastDayOfWeek, numFebDays);
lastDayOfWeek = printMonth("March", lastDayOfWeek, 31);
lastDayOfWeek = printMonth("April", lastDayOfWeek, 30);
lastDayOfWeek = printMonth("May", lastDayOfWeek, 31);
lastDayOfWeek = printMonth("June", lastDayOfWeek, 30);
lastDayOfWeek = printMonth("July", lastDayOfWeek, 31);
lastDayOfWeek = printMonth("August", lastDayOfWeek, 31);
lastDayOfWeek = printMonth("September", lastDayOfWeek, 30);
lastDayOfWeek = printMonth("October", lastDayOfWeek, 31);
lastDayOfWeek = printMonth("November", lastDayOfWeek, 30);
lastDayOfWeek = printMonth("December", lastDayOfWeek, 31);
}
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