Java 2D ArrayList

import java.util.*;

public class Main {

public static void main(String[] args) {

ArrayList<ArrayList<String>> groceryList = new 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);
groceryList.add(produceList);
groceryList.add(drinksList);

System.out.println(groceryList);

}
}

ArrayList<ArrayList<ArrayList<String>>> array = new ArrayList ();

import java.util.*;

public class Main {

public static void main(String[] args) {

ArrayList<ArrayList<String>> groceryList = new 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);
groceryList.add(produceList);
groceryList.add(drinksList);

System.out.println(groceryList);

}
}

it possible to populate array indexes with an array list?

Your code shows me all errors

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my code which takes input from users ,package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

public class Indra {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String cake;
String biscuit;
ArrayList<ArrayList<String>> grocery = new ArrayList<ArrayList<String>>();
ArrayList<String> cakes = new ArrayList<String>();
ArrayList<String> biscuits = new ArrayList<String>();
while (true) {
System.out.println("Enter cake name");
cake = input.nextLine();
if (cake.toLowerCase().equals("exit")) {
break;
} else {
cakes.add(cake);
}
}
while (true) {
System.out.println("Enter biscuit name");
biscuit = input.nextLine();
if (biscuit.toLowerCase().equals("exit")) {
break;
} else {
biscuits.add(biscuit);
}
}
input.close();
grocery.add(cakes);
grocery.add(biscuits);
System.out.println(grocery);

}
}

It helps

ArrayList<>(); vs ArrayList<String>(); vs ArrayList(); What is the difference among them? I'm so confused.

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thanks! very helpful and well explained

I have a data in String as below:

String originalData = “[12345, 65656, abc, 7.5, 12/12/2023],[65656,abc,7.5,12/12/2020],[76767,565656,abc,7.5,12/12/2020]”;

I want to store the above in ArrayList<<ArrayList> >processedData();

Output:

processedData.get(0)= [12345, 65656, abc, 7.5, 12/12/2023] processedData.get(0).get(0)= 12345

Please help

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