package grocerybagclient; import java.util.LinkedList; import java.util.Listiterator, public class GroceryBag { private LinkedList bag; public Grocery BagOX bag = new LinkedList0); } public LinkedList getBagOX return bag: } public boolean add(String newitem){ return bag.add(newitem); } public String remove(String anltemX if(bag.remove(anltem)) return anltem; else return null; } public void clear({ bag.clear(); public boolean contains(String anltemX return bag.contains(anltem); } public int count(String anltem/ LinkedList tempBag = new LinkedList->(bag); int elementcount = 0; while(tempBag.remove(anitem) == trueX elementcount++; } return elementcount; } public int getSize(X return bag.size(); } public boolean isEmptyOX return bag.isEmptyO; } public void display if(lisEmptyOX ListIterator bagiterator = bag.listiterator(0); while(baglterator hasNext(X System.out.println(bagiterator.next(); } } else{ System.out.println("Bag is empty"); } } public GroceryBag union(GroceryBag anotherBagX GroceryBag newBag = new GroceryBag(); if(lisEmptyOX Listiterator baglterator = bag.listiterator(0); while(baglterator.hasNextOX newBag.add(baglterator.next().toString(); } } if(!anotherBag.isEmptyOX Listiterator anotherBaglterator = anotherBag.getBag().listiterator(); while(anotherBaglterator hasNextOX newBag.add(anotherBaglterator.next().toString); } } return newBag } public GroceryBag intersection(GroceryBag anotherBag GroceryBag newBag = new GroceryBag(); if(lisEmptyOX Listiterator baglterator = bag.listiterator(0); while(bagiterator hasNext(X String item = baglterator.next().toStringo: if(anotherBag.contains(item)X newBag.add(item); } } } return newBag; } public GroceryBag difference(GroceryBag anotherBag/ GroceryBag newBag = new GroceryBago; if(lisEmptyOX ListIterator baglterator = bag.listiterator(0); while(baglterator.hasNext(X String item = baglterator.next().toString; if(!anotherBag.contains(item)X newBag.add(item); } } return newBag; } } package grocerybagclient; import java.util.Scanner; public class GroceryBagClient { private static int getMenuChoice(Scanner input/ System.out.println("Please choose one of the following:"); System.out.println(" ."); System.out.println("1) Add item to a bag"); System.out.println("2) Remove an item from a bag"); System.out.println("3) Clear the contents of a bag"); System.out.println("4) Find an item in a bag"); System.out.println("5) find the quantity of an item in a bag"); System.out.println("6) Find the total number of items in a bag"); System.out.println("7) Display the contents of a bag"); System.out.println("8) Create the union bag"); System.out.println("9) Create the intersection bag"); System.out.println("10) Create the difference bag that has items of bag1 not in bag2"); System.out.println("11) Exit"); user input and try until it finds valid input do{ System.out.print("Enter your choice (1-11): "); String choiceString = input.nextLine(); Try{ int choice = Integer.parseInt(choiceString.trim()); if(choice > 0 && choice 0 && choice