Question

Given a ListItem class, complete main() using the built-in LinkedList type to create a linked list called shoppingList. The program should read items from input (ending with -1), adding each item to shoppingList, and output each item in shoppingList using the printNodeData() method.

Ex. If the input is:

the output is:

Answer 1

import java.util.Scanner;
import java.util.LinkedList;

public class ShoppingList {
   public static void main (String[] args) {
      Scanner scnr = new Scanner(System.in);

      // TODO: Declare a LinkedList called shoppingList of type ListItem
      LinkedList<ListItem> shoppingList = new LinkedList<ListItem>();
        String item;

      String item;
      
      // TODO: Scan inputs (items) and add them to the shoppingList LinkedList
      //       Read inputs until a -1 is input
     do {
            item = scnr.nextLine();
            if (item.length() == 2 && item.charAt(0) == '-' && item.charAt(1) == '1')
                break;
            else
                shoppingList.add(new ListItem(item));
        } while (true);
      
      // TODO: Print the shoppingList LinkedList using the printNodeData() method
      for (int i = 0; i < shoppingList.size(); i++)
            shoppingList.get(i).printNodeData();
    }
    

   }
}