java - 帐户类Java OOP

我已经创建了一个帐户类，但是在进行第一次计算之后，它将继续并将第二行加倍。我是否错过了代码中的任何内容。

public class Account
{
    private double balance; //STATE
    private double interestRate; //STATE
    private double rate;//STATE

    public Account()
    {
        balance = 0;
        interestRate = 0;
    }

    public Account(double amount, double interestRate)
    {
        balance = amount;
        rate = interestRate;

    }

    public void deposit(double amount)
    {
        balance=balance+amount;
    }

    public void withdraw(double amount)
    {
        balance = balance - amount;
    }

    public void setInterest(double rate)
    {
        balance = balance + balance * rate;
        //this.setInterst = setInterest;
        //setInterest = InterestRate / 12;
    }

    public double computeInterest(int n)
    {
        balance=Math.pow(balance*(1+rate),n/12);
        return balance;
    }

    public double getsetInterest()
    {
        return rate;
    }

    public double getBalance()
    {
        return balance;
    }

    public void close()
    {
        balance =0;
    }

}

public class TestAccountInterest
{
    public static void main (String[] args)
    {
        Account acc1 = new Account(500, 0.1);//0.10);
        Account acc2 = new Account(400, 0.2); //0.20);

      /*************************************
       ACC1 ACCOUNT BELOW
       *************************************/
        acc1.deposit(500);
        acc1.withdraw(300);
        acc1.computeInterest(12);
        acc1.computeInterest(24);
        System.out.println(acc1.computeInterest(12));

        /**************************************
        ACC2 ACCOUNT BELOW
         **************************************/
        acc2.withdraw(200);
        acc2.deposit(800);
        acc2.computeInterest(24);
        System.out.println(acc2.computeInterest(24));

    }

}

我不知道我错过了什么还是写错了代码。

最佳答案

    acc1.computeInterest(12);
    acc1.computeInterest(24);

在我看来，您想要的是调用这些函数仅返回计算出的利息，但不应更改余额变量。

只需返回计算值，而不将其保存在@balance变量中即可。

这是我对您问题的解释，您有点含糊。

关于java - 帐户类Java OOP，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42137561/