Question

How a array of 3 work in java code. explain it ( shows the output and some part of the program , this is optional)

Answer 1

or example i will appreciated

Answer 2

do you need an arraylist or a set value container?

Answer 3

either way is fine

Answer 4

What do you want exactly? How you intialize an array? Or how to use it for an output?
Or just a general introduction to arrays?

Answer 5

the output and the array code as i iknow is look like this a[][][]=[12][7][2] or a[][]=[12][9][2]

Answer 6

When you initialize an array it looks like this:
int[] a = new int[10];
After this you've created the array with place for ten int-variables.
If you want to make a multi-dimensional array it looks like this:
int[][] b = new int[10][2];
This line creates a two-dimensional array, which provides place for ten one-dimensional arrays. So if you want to put something in b you have to write this:
b[0][0] = 2;
b[0][1] = 3;

So far to the intializing.
If you want to get the values from the array and to print them on the console you have to write this:
System.out.println("x:"+b[0][0]+" y:"+b[0][1])
This will give you this output on the console:
x:2 y:3
You can only access one element (or better: object) at a time.

Is this, what you wanted to know?^^

Answer 7

what about he output when is that array

Answer 8

An array itself has no predefined output, you have some ways to do it, i described the easiest way in the second paragraph of the post above.

You just have to make a printline and then the string, where you can fill in the values from the array.

Answer 9

ok

Answer 10

And in addition: An array like
int[][] a = new int[10][3];
creates a table with 3 columns and 10 rows - its an array of arrays. With an array like this:
int[][][] b = new int[10][3][3];
you would create a three-dimensional array - an array of an array of an array. This would not be a table anymore - more a cube (if you model arrays in a 3D room, thats way more comfortable than making notes about that). It would more be like a cube. Always think of that every square brackets create a new dimension of arrays.

Answer 11

thanks