Question

i am looking for a data structure to store two dimensional integer arrays.
Is List the rigth data structure or should i use another one?

Can someone give me a short example on how to create such a data structure and how to add a 2d array?

Edit: I want a data structure in which i want to store int[11][7] arrays.
For instance ten, int[11][7] arrays.

Answer 1

If you need to store a number of int[][] arrays in a data structure, I would probably recommend that you store the int[][] arrays in an Object that represents what the data contains, then store these Objects in an ArrayList.

For example, here is a simple Object wrapper for your int[][] arrays

public class 2DArray {
    int[][] array;
    public 2DArray(int[][] initialArray){
        array = initialArray;
    }
}

And here is how you would use them, and store them in an ArrayList

// create the list
ArrayList<2DArray> myList = new ArrayList<2DArray>();
// add the 2D arrays to the list
myList.add(new 2DArray(myArray1));
myList.add(new 2DArray(myArray2));
myList.add(new 2DArray(myArray3));

The reason for my suggestion is that your int[][] array must have some meaning to you. By storing this in an Object wrapper class, you can give it a meaning. For example, if the values were co-ordinates, you would call your class Coordinates instead of 2DArray. You, therefore, create a List of Coordinates, which has a lot more meaning than int[][][].