java在一个数组变量上存储数据并在之后调用它

Question

我对编程很陌生，而且我很难找出某个问题。

我在我的基本POS java项目中有一个“添加订单”功能，但是一旦我从另一个列表中添加另一个订单，收据中显示的唯一一个是我订购的最后一个订单。

所以这里只是我的代码的示例：

            System.out.println("--------------------------------------");
            System.out.println("Your order(s): ");
            System.out.println(order+" x "+howmany+" = P "+tempBill);
            System.out.println("--------------------------------------");

            // STORE IN A HOLDER VARIABLE IN CASE OF ADDING ORDERS
            ordery[i2] = order;
            tempBilly[i2] = tempBill;
            howmanyarray[i2] = howmany;
            i2++;

            // CHOOSING IF ADD MORE ORDER OR PROCEED TO PAYMENT

            System.out.println("What do you wish to do after this?");
            System.out.println("[1] Add Order\n[2] Proceed to Payment\n[3] Cancel ");

            do
            {
                System.out.print("Enter the number of your choice: ");
                choice2 = input.nextInt();
                if (choice2==1) {
                    readMain();
                }
                else if (choice2==2)
                {
                    System.out.println("--------------------------------------");
                    System.out.println("ITEM(S) ORDERED: ");
                    for (a = 1; a < i2; a++) {
                        System.out.println(ordery[a]+" x "+howmanyarray[a]+" = P "+tempBilly[a]);
                        totalBill = totalBill + tempBilly[a];
                    }
                    System.out.println();

                    do
                    {
                        System.out.print("Enter amount of cash for payment: ");
                        cash = input.nextDouble();
                        if (cash>=totalBill) {
                            System.out.println();
                            System.out.println("xxxxxxxxx OFFICIAL RECEIPT xxxxxxxxx");
                            System.out.println("ORDER(S):");
                            System.out.println(" • "+order+" x "+howmany);
                            System.out.println("TOTAL BILL: P "+totalBill);
                            System.out.println("AMOUNT PAID: P "+cash);
                            System.out.println("CHANGE: P "+bills.change(cash, totalBill));

                            PrintWriter resibo = new PrintWriter(new FileWriter("resibo.txt", true));
                            Date dt = new Date();
                            resibo.write("xxxxxxxxx OFFICIAL RECEIPT xxxxxxxxx\n");
                            resibo.write(dt.toString());
                            resibo.write("\nORDER(S):\n");
                            resibo.write(" • "+order+" x "+howmany+"\n");
                            resibo.write("TOTAL BILL: P "+totalBill+"\n");
                            resibo.write("AMOUNT PAID: P "+cash+"\n");
                            resibo.write("CHANGE: P "+bills.change(cash, totalBill));
                            resibo.write("\n\n");
                            resibo.close();

                            System.out.println("--------------------------------------");
                            System.out.println("THANK YOU! PLEASE COME AGAIN!");
                            System.out.println("--------------------------------------");
                            System.out.println();
                            read.close();

                            String[] str = null;
                            try2.main(str);
                        }
                    }
                    while (cash<totalBill || cash<0);
                }
                else if (choice2==3){
                    try2.customer();
                }
            }
            while (choice2>3 || choice2<=0);

以下是示例输出的图像：output

我尝试从饮料清单中订购冰沙然后继续付款，付款后应该显示我订购的两件物品，但它只显示我订购的最后一件（冰沙）。这是图片或收据：receipt

请帮助我。谢谢。