所以我正在嘗試創(chuàng)建一個(gè)程序，允許用戶將物品放入雜貨籃中。第 1 步：用戶應(yīng)該能夠添加帶有名稱和價(jià)格的雜貨項(xiàng)目。步驟2：籃子上不得添加重復(fù)名稱第 3 步：用戶應(yīng)該能夠刪除指定名稱的雜貨。第 4 步：用戶應(yīng)該能夠看到購物籃中的所有內(nèi)容。我知道我快完成了，但我堅(jiān)持第 3 步和第 4 步，有什么建議嗎？這是我的代碼public class Main {public static void main(String[] args) {Scanner myReader = new Scanner(System.in);        while (true) {    System.out.println("What would you want to do today?");    System.out.println("(A)dd grocery item\n(R)emove grocery item\n(S)ee all items");     System.out.println("Enter Command: ");    String toDo = myReader.nextLine();        if (toDo.equals("A")) {            System.out.print("New Item Name: ");            String grocery = myReader.nextLine();            GroceryPackage grocery1 = new GroceryPackage();            grocery1.addGrocery(grocery);            System.out.print("New Item Price: ");            String groceryPrice = myReader.nextLine();            grocery1.addGrocery(groceryPrice);            System.out.println("Added new item Succesfully!");        }        if (toDo.equals("R")) {            System.out.print("Name of the Item you want to Remove: ");            String removeItem = myReader.nextLine();            removeItem.removeGrocery(grocery);        }        if (toDo.equals("S")) {            System.out.print(GroceryPackage);        }        System.out.println("Thanks!");    }}}public class GroceryPackage {private String addGrocery;private boolean groceryPrice;private String removeGrocery;private String grocery1;public void setGrocery1(String grocery1) {    this.grocery1 = grocery1;}public void setListofGrocery(ArrayList<String> listofGrocery) {    this.listofGrocery = listofGrocery;}private ArrayList<String> listofGrocery;public GroceryPackage(String addGrocery, boolean groceryPrice) {    this.addGrocery = addGrocery;    this.groceryPrice = groceryPrice;                }public GroceryPackage() {    this.listofGrocery = new ArrayList<String>();}