How do you assign multiple values to a single element in an array?

Question

I'm probably not wording the question right.
I have an array, let's call it M[], and for each element in the array (we'll say M[1]), I need assign three integers: row, col and value.
I need to set it up so I can do something like this:
A.row = M[i].col;
A[i].col = M[i].row;
A[i].value = M[i].value;
The algorithm isn't what I need help with, it's assigning .col, .row and .value to an index of an array.
Please help if you can.

Answer 1

You are right. You did not word your question perfectly, but I still think I get what you want.
First of all: A single element in an array always has exactly one value. No more, no less.
But that's not a problem. The element in an array is either of a primitive type (boolean, byte, char, short, int, long, float, double) or it's a reference (to a Object, String, MyClass, ...).
You can simply write a class that holds your three values and create an array of that type:
public class SomeData {
  public int row;
  public int col;
  public int value;
// somewhere else:
SomeData[] a = new SomeData[10];
a[0] = new SomeData();
a[0].row = 10;
a[0].col = 5;
a[0].value = 42;Note how you only assign a single value to the element (a[0]) itself. All other assignment actually go to fields of the object refered to by that element in the array.
Also note that in Java types (such as classes, interfaces, ...) should start with a upper-case letter, while variables (local variables, members, parameters) and method names should start with a lower-case letter.
Edit: I'm getting old ...