20_2dArrayList

//2D Array List = Dynamic list of lists
//You can change the size of these lists during runtime

public class Main {
    public static void main(String[] args) {

        ArrayList<ArrayList<String>> groceryList = new ArrayList(); //To create 2D ArrayList

        ArrayList<String> bakeryList = new ArrayList();
        bakeryList.add("pasta");
        bakeryList.add("garlic bread");
        bakeryList.add("donuts");

        ArrayList<String> produceList = new ArrayList();
        produceList.add("tomatoes");
        produceList.add("zucchini");
        produceList.add("peppers");

        ArrayList<String> drinksList = new ArrayList();
        drinksList.add("soda");
        drinksList.add("coffee");

        groceryList.add(bakeryList); //To add list into list
        groceryList.add(produceList);
        groceryList.add(drinksList);
        System.out.println(groceryList);
        System.out.println(groceryList.get(0).get(0));//Get ? element in ? list
    }
}