Question

I am having a method(function) that is supposed to add a (8*6)Array to an Array list. Function is called several times.

int [][] KeySelection = new int [8][7];

  for(int i=0;i<KeySelection.length;i++){
  for(int j=0;j<KeySelection[0].length;j++){
      KeySelection[i][j] = (int) (Math.random () * 2);

     }
  }

Each time this function is called a totally new KeySelection Array is done. What i need now is to declare an array list so that it could store all the KeySelection Arrays in that list.

So that when i need the first KeySelection Table i could find it in the first index of the Array list. Could somebody Help

Answer 1

Create an ArrayList of type int[][]: –

List<int[][]> list = new ArrayList<int[][]>();

And then, add your array to this list after creation: –

list.add(keySelection);

NOTE: – Variable name should start with lowercase letters.