java - 创建帐户(对象)时输出错误

Question

我的程序有问题，该程序是我编写的另一个名为 account 的程序的子类。我创建一个帐户 (george) 并为其设置值、名称字符串、int id 和双倍余额。我没有收到任何错误，但唯一正确的值是名称字符串。我认为它必须对帐户类中的 Overridden toString() 方法执行某些操作，而不是获取正确的值。

我的输出:

Account holder name: George
Account id: 0
Annual interest: 1.5
Monthly Interest Rate: 0.00125
Balance 109.0
Transaction: 

正确输出:

Account holder name: George
Account id: 1122
Annual interest: 0.015
Monthly Interest Rate: 0.013862499999999998
balance: 1109.0
Transaction:
type: d amount: 30.0 balance: 1030.0 deposit
type: d amount: 40.0 balance: 1070.0 deposit
type: d amount: 50.0 balance: 1120.0 deposit
type: w amount: 5.0 balance: 1115.0 withdrawal
type: w amount: 4.0 balance: 1111.0 withdrawal
type: w amount: 2.0 balance: 1109.0 withdrawal 

客户帐户.class:

public class CustomerAccount extends Account {

public static String name;

public static void main(String[] args) {
    // TODO Auto-generated method stub

    CustomerAccount george = new CustomerAccount("George", 1122, 1000.0);
    george.setannualInterest(1.5);
    Account c1 = george;

    george.deposit(30);
    george.deposit(40);
    george.deposit(50);

    george.withdraw(5);
    george.withdraw(4);
    george.withdraw(2);

    System.out.println(c1.toString());

    CustomerAccount john = new CustomerAccount("John", 1123, 500);
    john.setannualInterest(2.5);
    Account c2 = john;

    ArrayList<CustomerAccount> sort = new ArrayList<CustomerAccount>();
    //sort.add(c1);
    //sort.addAll(c2);

}

    CustomerAccount(String name, int id, double balance) {
        this.name = name;
        id = getId();
        balance = getBalance();
}

   ArrayList<Transaction> transactions = new ArrayList<Transaction>();
}

交易类别:

class Transaction extends Account {
    private java.util.Date dateCreated;
    private char type;
    private double amount;
    private double balance;
    private String description;
    private double transaction;

Transaction() {

}

Transaction(char type, double amount, double balance, String description) {
    dateCreated = new java.util.Date();
    this.type = type;
    this.amount = amount;
    this.balance = balance;
    this.description = description;
}

public String getDateCreated() {
    return dateCreated.toString();
}

public char getType() {
    return type;
}

public double getAmount() {
    return amount;
}

public double getBalance() {
    return balance;
}

public String getDescription() {
    return description;
}

public double getTransaction() {
    return this.transaction;
}

public void setType(char type) {
    this.type = type;
}

public void setAmount(double amount) {
    this.amount = amount;
}

public void setBalance(double balance) {
    this.balance = balance;
}

public void setDescription(String description) {
    this.description = description;
}

public void setTransaction(double amount) {
    this.transaction = amount;
}
}

帐户.类:

class Account {
    private int id = 0;
    private double balance = 0.0;
    private double annualInterestRate = 0.0;
    private java.util.Date dateCreated;

// set dateCreated for the time and date the account was created
Account() {
    dateCreated = new java.util.Date();
}

// Set accounts id and balance equal to this objects
Account(int id, double balance){
    this();
    this.id = id;
    this.balance = balance;
}

// Getters and Setters manipulating variables to be set to the created account
// Setters have no return value and set itself equal to the variable and getters 
// grab the variables and return them.
public int getId() {
    return this.id;
}

public double getBalance() {
    return this.balance;
}

public double getannualInterestRate() {
    return this.annualInterestRate;
}

public String getDateCreated() {
    return this.dateCreated.toString();
}

public void setId(int id) {
    this.id = id;
}

public void setBalance(double balance) {
    this.balance = balance;
}

public void setannualInterest(double annualInterestRate) {
    this.annualInterestRate = annualInterestRate;
}

public double getMonthlyInterestRate() {
    return (annualInterestRate / 100) / 12;
}

public double getMonthlyInterest() {
    return balance * getMonthlyInterestRate();
}

// set balance of withdraw to balance - amount = balance
public void withdraw (double amount) {
    if(amount < balance) {
        balance -= amount;
    }
}

// set balance of deposit to balance + amount = balance
public void deposit(double amount) {
    balance += amount;
    //Transaction.add(new Transaction('D', amount, balance, "Deposit to account"));
}   

@Override
public String toString() {
    return "Account holder name: " + CustomerAccount.name + 
            "\nAccount id: " + id + 
            "\nAnnual interest: " + this.getannualInterestRate() + 
            "\nMonthly Interest Rate: " + this.getMonthlyInterestRate() + 
            "\nBalance " + this.getBalance() +
            "\nTransaction: ";
}
}

Answer 1

要设置 Account 类中的值，您需要调用

super(id, balance)

在 CustomerAccount 构造函数中调用 Account 的构造函数

试试这个