How to add arrays to ArrayList?

Question

I have an int[3][3] array and it contains only 0 or 1 values, if the value is 1 I want to add the coordinates of this value in the ArrayList as int[2] array, but I don\'t know w

Answer 1

You need to create new coordinates array for each i,j pair you want to place in your list. For now you are placing same array multiple times which remembers last set pair.

In other words you need to

if (board[i][j] == 1) {
    coordinates = new int[2];//add this line
    coordinates[0] = i;
    coordinates[1] = j;
    arrayList.add(coordinates);

}