gistfile1.java

public void initColumn (ArrayList<Spaces> arr){
    int index = 0;
    while (index <= 5){
        arr.set(index, new unFilled());
        index++;
    }
}

public void initColumn (ArrayList<Spaces> arr){
    for (int index = 0; index <= 5; index++) {
        arr.set(index, new unFilled());
    }
}

public void initColumn (ArrayList<Spaces> arr){
    for (int index = 0; index <= 5; index++) {
        arr.add(new unFilled());
    }
}