选择一个银行账户并使用菜单使用该账户

如何解决选择一个银行账户并使用菜单使用该账户

下午好，

我正在制作一个银行应用程序。 用户可以选择将钱从一个帐户转移到另一个帐户，这是菜单中的选项 5。 我希望用户选择他想要转账的银行账户和金额。 这是选项 5 的代码：

 } else if (inputin == 5) {
    System.out.println("Choose a bank account to transfer to: ");
    for (int y = 0; y < bankAccountsList.length; y++) {
        System.out.printf("%d %s%n",y + 1,bankAccountsList[y]);
    }
    Scanner transferbankChoice = new Scanner(system.in);
    int inputBankChoiceTransfer = transferbankChoice.nextInt();


    System.out.println(bankAccountService.transfer("" currentaccount comes here "","" account chosen comes here "",300));

我打算使用“当前帐户”，这是用户可以选择使用的帐户，但我也无法解决此问题。 这个想法很简单，当菜单弹出时，用户可以“选择银行账户”，一旦我选择的账户可以使用菜单中的所有其他选项。

完整代码在这里：

package BankProject;


import java.awt.desktop.SystemEventListener;
import java.util.Scanner;

public class Main {
public static void main(String[] args) {


    BankAccountService bankAccountService = new BankAccountService();
    Person person = new Person();

    BankAccount account0 = new BankAccount();
    account0.accountNumber = "BE42 2556 2556 1442";
    account0.balance = 1000;
    account0.lowerLimit = 0;
    account0.currency = "EUR";
    person = new Person();
    person.firstName = "Nani";
    person.familyName = "Poonani";
    person.address = "grove Str.";
    account0.person = person;
    bankAccountService.addBankAccount(account0);


    BankAccount account1 = new BankAccount();
    account1.accountNumber = "BE42 2556 2556 4200";
    account1.balance = 500;
    account1.lowerLimit = 0;
    account1.currency = "EUR";
    person = new Person();
    person.firstName = "Carl";
    person.familyName = "Jackson";
    person.address = "grove Str. 420";
    account1.person = person;
    bankAccountService.addBankAccount(account1);


    BankAccount account2 = new BankAccount();
    account2.accountNumber = "BE42 2556 2556 7577";
    account2.balance = 100;
    account2.lowerLimit = 0;
    account2.currency = "EUR";
    person = new Person();
    person.firstName = "Big";
    person.familyName = "Smoke";
    person.address = "Ballas Str. 777";
    account2.person = person;
    bankAccountService.addBankAccount(account2);


    // System.out.println(bankAccountService.deposit(account1,100));
    // System.out.println(bankAccountService.deposit(account2,300));
    //  System.out.println(bankAccountService.deposit(account0,600));

    // System.out.println(bankAccountService.withdraw(account1,25));
    //System.out.println(bankAccountService.withdraw(account2,50));
    // System.out.println(bankAccountService.withdraw(account0,100));

    //System.out.println(bankAccountService.transfer(account1,account2,100));
    // System.out.println(bankAccountService.transfer(account2,account0,300));
    //System.out.println(bankAccountService.transfer(account0,account1,600));


    //System.out.println(bankAccountService.getAccount("BE42 2556 2556 7577"));


    String bankAccountsstring = "BE42 2556 2556 7577,BE42 2556 2556 4200,BE42 2556 2556 1442";
    String[] bankAccountsList = bankAccountsstring.split(",");

    System.out.println("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$");
    System.out.println("!                                                    Welcome To San Andreas Bank                                                  !");
    System.out.println("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$");
    System.out.println("--------------------------------------------------");
    System.out.println("Current account: ");
    System.out.println("--------------------------------------------------");
    System.out.println("Enter one of the following numbers to select: ");
    System.out.println(" ");
    System.out.println("1.Select bank account ");
    System.out.println("2.Check account balance ");
    System.out.println("3.Deposit ");
    System.out.println("4.Withdraw money ");
    System.out.println("5.Transfer money ");
    System.out.println("6.Exit ");

    Scanner inputin1 = new Scanner(system.in);
    int inputin = inputin1.nextInt();


    if (inputin <= 0 || inputin > 6) {
        System.out.println("Please try again,choose a number between 1 and 6");
    } else if (inputin == 1) {
        System.out.println("Choose a bank account: ");
        for (int y = 0; y < bankAccountsList.length; y++) {
            System.out.printf("%d %s%n",bankAccountsList[y]);
        }
        Scanner bankChoice = new Scanner(system.in);
        int inputBankChoice = bankChoice.nextInt();


        if (inputBankChoice == 1) {
            System.out.println("Your current account is Now: " + bankAccountService.getAccount("BE42 2556 2556 7577"));
        } else if (inputBankChoice == 2) {
            System.out.println("Your current account is Now: " + bankAccountService.getAccount("BE42 2556 2556 4200"));
        } else if (inputBankChoice == 3) {
            System.out.println("Your current account is Now: " + bankAccountService.getAccount("BE42 2556 2556 1442"));
        }

    } else if (inputin == 2) {

        System.out.println(bankAccountService.getAccountBalance(account0));


    } else if (inputin == 3) {
        System.out.println(bankAccountService.deposit(account1,100));

    } else if (inputin == 4) {
        System.out.println(bankAccountService.withdraw(account0,100));

    } else if (inputin == 5) {
        System.out.println("Choose a bank account to transfer to: ");
        for (int y = 0; y < bankAccountsList.length; y++) {
            System.out.printf("%d %s%n",bankAccountsList[y]);
        }
        Scanner transferbankChoice = new Scanner(system.in);
        int inputBankChoiceTransfer = transferbankChoice.nextInt();


        System.out.println(bankAccountService.transfer("" currentaccount comes here "",300));
    } else if (inputin == 6) {

    }

}
}

欢迎所有建议我已经学习了 1 个月的 Java，这段代码可能有很多错误。

问候