2D Array help

[Etimer]

Hey, I was wondering why this code isn't working. It's just printing random letters and numbers out instead.
I want for it to print all the days in order throughout the year, for example:
1
|
31
(February is excluded)
1
|
31
1
|
30
...and so on...

Here's the code:

public class b4 {	
	public static void main(String[]args){
		for(int[] x: day()){
			System.out.println(x);
		}
	}
	
	public static int[][]day(){
		int[]jan = {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};
		//I'm skipping February for now, I know how to get the leap/non-leap year but for now I'll just skip it.
		int[]mar = {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};
		int[]apr = {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};
		int[]may = {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};
		int[]jun = {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};
		int[]jul = {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};
		int[]aug = {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};
		int[]sep = {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};
		int[]oct = {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};
		int[]nov = {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};
		int[]dec = {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};
		
		int[][]day = {jan, mar, apr, may, jun, jul, aug, sep, oct, nov, dec};
		return day;
	}
	
	//Ignore this 
	public static int[]feb(){
		int[]feb = {};
		return feb;
	}
}

Thanks!

[Norm]

It's just printing random letters and numbers out instead.

Please post what the program is printing out.

Are you talking about the default value returned by the Object class's toString method for an array?
x is an array, not an single value

To format the contents of an array for printing see the Arrays class's toString() method

[Etimer]

Here's what the program prints out:

[I@316becfe
[I@2494310b
[I@7d1fdbef
[I@36a06816
[I@5d11985e
[I@2e2a730e
[I@64e7b3cf
[I@27ce0eca
[I@492d0430
[I@2a6e10d8
[I@2013eaab

[Norm]

That is from the toString method. See post#2

[Etimer]

Where would i put it?

[Norm]

Where do you want to format the contents of the array referenced by x for printing?

[Etimer]

I guess in the method where i declared the arrays.

[Norm]

x is the array you are trying to print.

[Etimer]

I'm totally lost

[Norm]

x is an array. You will not see its contents when you try to print it with println. You get the String returned by the Object class's toString method.
You need to treat x as an array and access its members by indexing it: for example x[0] would give you the first element of the array.

Did you read the API doc for the Arrays class's toString method?

[Etimer]

Yes i just did, after i saw your reply, but i don't really understand it. Its alright.

would i just do something like:

return day().toString;

[Norm]

return day().toString;

What happened when you tried that?

if x were defined like this:
int[] x = {1,2,3};
How would you print out its contents?

Write a small program to print it. Try this:
System.out.println(x);
Then write a loop to print the elements one by one.

[Etimer]

Ok, heres the code that I ended up with after that:

public class b4 {   
    public static void main(String[]args){
            System.out.println(day());
    }
     
    public static String day(){
        int[]jan = {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};
        //I'm skipping February for now, I know how to get the leap/non-leap year but for now I'll just skip it.
        int[]mar = {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};
        int[]apr = {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};
        int[]may = {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};
        int[]jun = {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};
        int[]jul = {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};
        int[]aug = {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};
        int[]sep = {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};
        int[]oct = {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};
        int[]nov = {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};
        int[]dec = {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};
         
        int[][]day = {jan, mar, apr, may, jun, jul, aug, sep, oct, nov, dec};
        return day.toString();
    }
     
    //Ignore this 
    public static int[]feb(){
        int[]feb = {};
        return feb;
    }
}

And here's what it printed:

[[I@19117681


And now i'll try what you just said.
EDIT:::

if x were defined like this:
int[] x = {1,2,3};
How would you print out its contents?

Write a small program to print it. Try this:
System.out.println(x);
Then write a loop to print the elements one by one.

And heres how i would do that:

public class b5 {
	public static void main(String[]args){
		int[]x = {1,2,3};
		for(int y: x){
			System.out.println(y);
		}
	}
}

[Norm]

If you want day() to return a String that prints like this:
1
2
3
etc
Then you will need to have loops that go through each of the arrays in the day() method and build a long String that looks like this:
"1\n2\n3\netc"

[Etimer]

And i would put that in the parameters for the toString() function?

[Norm]

If the day() method returns a String.
You would build a String and return it:
String aStr "1\n..."; // some how build the String you want
..
return aStr; // return the String to the caller of the day() method

[Etimer]

so i wouldnt even be using the day array at all?

[Norm]

Use the logic for printing the contents of array that you posted in #13
in the code in post#1 to print the contents of the array x.

[Etimer]

That wouldn't work because it's a 2d array and it cant just loop through for some reason.

[Norm]

so i wouldnt even be using the day array at all?

How do you want to do it?
Have day() return a String formatted for printing
or have it return a 2D array of ints that have to be formatted for printing?