Mulit dimensional Array

**jonsamwell** · 02-02-2009, 12:30 PM

Hi all,

I have a multi-dimensional array that i want to assign variables to certain parts however, this code is not working where have i gone wrong?

Java Code:

String[][][] DetailsArray = new String[100][100][100];
DetailsArray[i][][] = surname;
DetailsArray[][i][] = forename;
DetailsArray[][i][] = age.toString();

regards,

Jon

**masijade** · 02-02-2009, 12:35 PM

In that you need to provide values for the other indexes as well. I.E.

Java Code:

String[][][] DetailsArray = new String[100][100][100];
DetailsArray[i][x][y] = surname;
DetailsArray[x][i][y] = forename;
DetailsArray[x][i][y] = age.toString();

**Eranga** · 02-02-2009, 12:36 PM

In multidimensional arrays you must define the initial size, that's the first array length.

**jonsamwell** · 02-02-2009, 12:38 PM

Hi but i want assign certain text to certain elements of the array so

Java Code:

String[][][] DetailsArray = new String[100][100][100];
DetailsArray[i][i][i] = {surname, forename, age.toString()};

Could i do this?

**Eranga** · 02-02-2009, 12:41 PM

You have to use quotation for strings.

**masijade** · 02-02-2009, 12:49 PM

Originally Posted by jonsamwell

Hi but i want assign certain text to certain elements of the array so

Java Code:

String[][][] DetailsArray = new String[100][100][100];
DetailsArray[i][i][i] = {surname, forename, age.toString()};

Could i do this?

Well, what you're showing is a single three element array, whereas what you've declared is a three dimensional array. Think of a cube, as that is how it would lay out. The first [] signifies the top to bottom axis along the left hand side. The second [] signifies the left to right axis along the top, and the third [] signifies the front to back axis (again, along the top).

What exactly is it you want to store? Do you want to store a list of information consisting of three columns? I.E. a list of names combined with ages? If so, you need a two dimensional (not three) array with the second dimension being 3 (I.E. new String[100][3] to store 100 three column items) and the info above (for the sake of posterity assuming it is the fifth line in the list) would be either

Java Code:

DetailsArray[4] = new String[] {surname, forename, age.toString()};
// or
DetailsArray[4][0] = surname;
DetailsArray[4][1] = forename;
DetailsArray[4][2] = age.toString();

Assuming surname and forname are variables.