浏览ArrayList，找不到对象

Question

我想以具有ID和帐号的客户身份登录系统。输入客户的号码后，我会毫不费力地通过ArrayList个客户。

当我输入帐号时，我的程序会浏览该特定客户的ArrayList个帐户，并打开一个与该帐户无关的对话框。

我希望ArrayList找到输入帐号并为该特定号码进行交易。

public void actionPerformed(ActionEvent e) {
    JFrame frame = new JFrame(" ");
    boolean found1 = false;
    boolean found = false;

    String a = JOptionPane.showInputDialog("Please enter the ID number: ");      
    for(Customer aCustomer: customers){
        System.out.println("ID: " + a + " = " + aCustomer.getId());

        int num = Integer.parseInt(a);  

        if(num == aCustomer.getId()){
            BankInterface.setCurrentCustomer(aCustomer);
            found1 = true;
            break;
        }
    }
    if(!found1){    
        JOptionPane.showMessageDialog(frame, "There is no customer with this ID number", "Please try again", JOptionPane.WARNING_MESSAGE);
    }

    if(found1){      
        String b = JOptionPane.showInputDialog("Please enter the account number: ");    
        int number = Integer.parseInt(b);   
        for(CustomerAccount cu: BankInterface.getCurrentCustomer().getAccounts()){ 
            System.out.println("Account: " + b + " = " + cu.getAccountNumber());
            if(number == cu.getAccountNumber()){
                //BankInterface.setCurrentCustomer(aCustomer);
                BankInterface.setCurrentAccount(cu);
                new WithdrawDepositDialog(BankInterface.this, customers);
                found = true;

                }

            }
        }
    }
}); 

对话框打开后，我试图获取我在驱动程序类中设置的内容以连接特定帐号。

顺便说一句，我将事务添加到我在Account类中的事务数组中：

AccountTransaction transactions = new AccountTransaction(date, type, amount);

BankInterface.getCurrentCustomer();
BankInterface.getCurrentAccount();
int arraySize =  BankInterface.getCurrentCustomer().getAccounts().size();

Customer tempCust = BankInterface.getCurrentCustomer();
for(Customer c : customers){
    if(c == tempCust){
        for(int i = 0; i < arraySize; i++){ 
            c.getAccounts().get(i).getTransactions().add(transactions);
            c.getAccounts().get(i).withdraw(amount);

        }

    }
}