[chumpster804]

i successfully compiled a program:

import java.util.Scanner;

public class xxxx_CaseThree {

public static void main (String[] args) {
   Scanner input = new Scanner (System.in);
   System.out.print ("Enter a 1 to display the number of days in each month in a regular calendar year and a 2 to display the number of days in each month in a leap year:");
   int year = input.nextInt();
   
   while (year < 1 || year > 2) {
	  System.out.println ("Invalid entry. Please try again.");
	  System.out.println ("Enter a 1 to display the number of days in each month in a regular calendar non-leap year and a 2 to display the number of days in each month in a leap year:");
	  year = input.nextInt();
   }  
 
   if (year == 1) {
	  System.out.println ("Month	 Days");
	  System.out.println ("1		  31");
	  System.out.println ("2		  29");
	  System.out.println ("3		  31");
	  System.out.println ("4		  30");
	  System.out.println ("5		  31");
	  System.out.println ("6		  30");
	  System.out.println ("7		  31");
	  System.out.println ("8		  31");
	  System.out.println ("9		  30");
	  System.out.println ("10		 31");
	  System.out.println ("11		 30");
	  System.out.println ("12		 31");
   }
   else {
	  System.out.println ("Month	 Days");
	  System.out.println ("1		  31");
	  System.out.println ("2		  28");
	  System.out.println ("3		  31");
	  System.out.println ("4		  30");
	  System.out.println ("5		  31");
	  System.out.println ("6		  30");
	  System.out.println ("7		  31");
	  System.out.println ("8		  31");
	  System.out.println ("9		  30");
	  System.out.println ("10		 31");
	  System.out.println ("11		 30");
	  System.out.println ("12		 31");
   }

  } // end method main 

} // end class xxxx_CaseThree

my next assignment is to accomplish the same results using an if conditional statement and a for loop. I cannot see the context to use a for loop. Can someone please give me a push start to get through this writers block? Thanks.

[japanir]

hi
notice that you have 12 months.
and only 4 posiblities for number of days: 28,29,30,31.
so run the loop 12 times(number of months).
for each iterate, check:
if month equals to 1 or 3 or 5 or 7 or 8 or 10 or 12
print 12 days.
else print 30 days.
make sure you do another check for if month = 2. and according to the year type(1 or 2) print either 29 or 28.

hope it helps

[chumpster804]

I think that makes a little sense. (i'm a little slow). I'll try it. Any more suggestion please feel free.

[tivrfoa]

import java.util.Scanner;

public class xxxx_CaseThree {

public static void main (String[] args) {
   Scanner input = new Scanner (System.in);
   System.out.print ("Enter a 1 to display the number of days in each month in a regular calendar year and a 2 to display the number of days in each month in a leap year:");
   int year = input.nextInt();
   
   while (year < 1 || year > 2) {
	  System.out.println ("Invalid entry. Please try again.");
	  System.out.println ("Enter a 1 to display the number of days in each month in a regular calendar non-leap year and a 2 to display the number of days in each month in a leap year:");
	  year = input.nextInt();
   }  
 
	System.out.println ("Month	 Days");

	for(int i=1;i<13;i++) {
		int d = 0;
		if(i==2) {
			if(year == 1) d = 29; else d = 28;
		} else {
			if(i<8) {
				if(i%2==0) d = 30; else d = 31;
			} else {
				if(i%2==0) d = 31; else d = 30;
			}
		}
		System.out.printf("%2d		  %2d\n", i, d);
	}
	 
  } // end method main

} // end class xxxx_CaseThree

[chumpster804]

ok. i'm a novice java compiler this is my first class so i don't get:

 if(i<8) {
				if(i%2==0) d = 30; else d = 31;
			} else {
				if(i%2==0) d = 31; else d = 30;
			}
		}
		System.out.printf("%2d		  %2d\n", i, d);

i thought % was remainder?

[ts230]

Take a look at this:
http://en.wikipedia.org/wiki/%
Maybe it helps you.

[tivrfoa]

chumpster804, on 2 Nov, 2009 - 05:05 PM, said:

i thought % was remainder?

it is

[chumpster804]

Ok. If someone could please put a little time in this and explain this to me like I'm a 2 yr. old. i = month, d = days? why in

 if(i<8) 

are we seperating Jan. - Aug.? Is it just to have an if else statement? Next, I don't understand

 if(i%2==0) 

. Does this mean even months because of the remainder = 0? Also, how can you have two exact statements

  if(i%2==0) 

result in d = 30 and the next statement d = 31? I have tried to find these answers on my own but for some reason nothing is clicking. Can someone please explain this to me in laymans terms? Thanks for the time.

[tivrfoa]

chumpster804, on 3 Nov, 2009 - 06:16 AM, said:

Ok. If someone could please put a little time in this and explain this to me like I'm a 2 yr. old. i = month, d = days? why in

 if(i<8) 

are we seperating Jan. - Aug.? Is it just to have an if else statement? Next, I don't understand

 if(i%2==0) 

. Does this mean even months because of the remainder = 0? Also, how can you have two exact statements

  if(i%2==0) 

result in d = 30 and the next statement d = 31? I have tried to find these answers on my own but for some reason nothing is clicking. Can someone please explain this to me in laymans terms? Thanks for the time.

come on, try to figure out. It's not hard. You're on the right track. =)

i -> month
d -> days

January - July: even months have 30 days (February is an exception)
August - December: even months have 31 days.

[chumpster804]

Thanks you all, but one last explaination and my dumb ass will leave you alone. Please explain:

System.out.printf("%2d		  %2d\n", i, d)

[tivrfoa]

chumpster804, on 3 Nov, 2009 - 08:43 AM, said:

Thanks you all, but one last explaination and my dumb ass will leave you alone. Please explain:

System.out.printf("%2d		  %2d\n", i, d)

http://en.wikipedia.org/wiki/Printf