public int sumOfStock(IngredientNode n) {
if (n == null) {
return 0;
} else {
return n.getIngredient().getStock() + sumOfStock(n.getNext());
}
}
public String printData() {
IngredientNode current = header;
String s = "";
while (current != null) {
s = s + "\n" + current.getIngredient();
current = current.getNext();
}
return s;
}