Question

我们的教授为我们提供了制作ATM计划的活动，除了创建新的ATM帐户和更改PIN码之外，我已经完成了大部分功能。我只能输出已创建新帐户或PIN已更改但我不知道如何实际执行此操作。当用户想要创建一个新帐户时，他将输入他的名字，姓氏，卡号，密码和余额（所有字符串除了余额为双倍）然后程序应该记录新帐户，这样你就可以用它来查询余额，存款或取款。这是我的两个ATM功能的代码：

#A6A6A6

新帐户的课程：

public class ATM_Frame extends javax.swing.JFrame {

int f=8;
int l=8;
int n=8;
int p=8;
int a=8;

String fname[] = new String [f];
String lname[] = new String [l];
String cardno[] = new String [n];
String pinno[] = new String [p];
double balance[] = new double [a];



public ATM_Frame() {


    initComponents();

    btnClr.setEnabled(true);
    btnNewAcc.setEnabled(false);
    btnInq2.setEnabled(false);
    btnDep2.setEnabled(false);
    btnWdw2.setEnabled(false);
    txtOutput.setEditable(false);


    fname[0] = "Gudrun"; 
    fname[1] = "Denis";
    fname[2] = "Tamiko";

    lname[0] = "Schlender"; 
    lname[1] = "Petrov";
    lname[2] = "Tanaka";

    cardno[0] = "5023"; 
    cardno[1] = "1821";
    cardno[2] = "9931";

    pinno[0] = "0000"; 
    pinno[1] = "1111";
    pinno[2] = "2222";

    balance[0] = 5290; 
    balance[1] = 3600;
    balance[2] = 10250;

}

private void btnNewAccActionPerformed(java.awt.event.ActionEvent evt) {                                          
    ButtonSound();
    String fname = txtfName.getText();
    String lname = txtlName.getText();
    String cardno = txtcardNo.getText();
    String pinno = txtpinNo.getText();
    double bal = Double.parseDouble(txtBal.getText());

    ATM_NewAcc a = new ATM_NewAcc(fname,lname,cardno,pinno,bal);
    txtOutput.setText("" + a.toString());
}     

private void btnChangePinActionPerformed(java.awt.event.ActionEvent evt) {                                             
    ButtonSound();
    String fname = txtfName.getText();
    String lname = txtlName.getText();
    String cardno = txtcardNo.getText();
    String pinno = txtpinNo.getText();
    String newpin = txtNewPin.getText();

    if(fname.equals("Gudrun") && lname.equals("Schlender") && cardno.equals("5023") && pinno.equals("0000"))
    {

        ATM_ChangePIN d = new ATM_ChangePIN(fname,lname,cardno,pinno,newpin);
        txtOutput.setText("" + d.toString());
}

    else if(fname.equals("Denis") && lname.equals("Petrov") && cardno.equals("1821") && pinno.equals("1111"))
    {
        ATM_ChangePIN d = new ATM_ChangePIN(fname,lname,cardno,pinno,newpin);
        txtOutput.setText("" + d.toString());
}

    else if(fname.equals("Tamiko") && lname.equals("Tanaka") && cardno.equals("9931") && pinno.equals("2222"))
    {
        ATM_ChangePIN d = new ATM_ChangePIN(fname,lname,cardno,pinno,newpin);
        txtOutput.setText("" + d.toString());
}

    else if(fname.equals("") || lname.equals("") || cardno.equals("") || pinno.equals("") && txtBal.equals(""))
    {
        JOptionPane.showMessageDialog(null, "Please fill out all necessary fields.", null, JOptionPane.WARNING_MESSAGE);
    }

    else 
    {
        JOptionPane.showMessageDialog(null, "The information you entered is invalid.", null, JOptionPane.ERROR_MESSAGE);
        txtfName.setText("");
        txtlName.setText("");
        txtcardNo.setText("");
        txtpinNo.setText("");
        txtNewPin.setText("");
        txtBal.setText("");
    }
}

更改密码的类：

public class ATM_NewAcc 
{
private String fname;
private String lname;
private String cardno;
private String pinno;
private double balance;

public ATM_NewAcc()
{
   fname = "";
   lname = "";
   cardno = "";
   pinno = "";
   balance = 0;
}

 public ATM_NewAcc(String first, String last, String card, String pin, double bal)
{
    fname = first;
    lname = last;
    cardno = card;
    pinno = pin;
    balance = bal;
}

@Override
public String toString()
{
        return "NEW BANK ACCOUNT CREATED!"
                + "\nName: " + fname + " " + lname 
                + "\nAccount Number: " + cardno 
                + "\nPIN Code: " + pinno
                + "\nBalance: " + balance;
} 
}

Answer 1

根据您提供的内容，您似乎必须将输入数据放入数组fname []，lname []等。

也许有一种方法＆＃34; addAccount（ATM_NewAcc acc）＆＃34;或类似的东西，将ATM_NewAcc对象的数据放入数组？当用户超过8个时会发生什么？ ;）

编辑：这样的事情？

public class Acc
{
    private String name;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public Acc(String name)
    {
        this.name = name;
    }
}

public class Atm
{
    private String[] users = new String[8];

    public static void main(String[] args)
    {
        Atm atm = new Atm();
        atm.users[0] = "Test1";
        atm.addUser(new Acc("Test2"));
        atm.printUsers();
    }

    private void printUsers()
    {
        for(String s : users)
        {
            if(s != null)
            {
                System.out.println(s);
            }
        }
    }

    private void addUser(Acc acc)
    {
        for(int i = 0; i < users.length; ++i)
        {
            if(users[i] == null)
            {
                users[i] = acc.getName();
                return;
            }
        }
        throw new IllegalStateException("Too many accounts");
    }
}

如何在此计划中添加新的ATM帐户并更改用户的PIN？

1 个答案: