Java - IF 语句仅返回 Else 子句

Question

所以问题出在我的提款方法上，由于某种原因，我的代码输出:

ADL
826501829
250.0
471.0
Balance is currently:40.0
There aren't enough funds.
There aren't enough funds.

我对 Java 不太熟悉，所以不太明白为什么它没有从 IF 语句中输出正确的选项

public class BankAcc {

    String accountName;
    int accountNumber;
    float accountOverdraft;
    float currentBalance;

    public BankAcc(String accountName, int accountNumber, float accountOverdraft, float currentBalance) {
        System.out.println(accountName);
        System.out.println(accountNumber);
        System.out.println(accountOverdraft);
        System.out.println(currentBalance);
    }

    public void deposit(float depositAmnt){
        currentBalance = currentBalance + depositAmnt;
        System.out.println("Balance is currently:" + currentBalance);
    }

    public void withdraw(float withdrawAmnt){
        if (withdrawAmnt <= currentBalance){
            currentBalance = currentBalance - withdrawAmnt;
            System.out.println("Balance is currently:" + currentBalance);
        } else {
            System.out.println("There aren't enough funds.");
        }
    }

    public static void main(String []args){
        BankAcc myBankAcc = new BankAcc("ADL",826501829, 250, 471);
        myBankAcc.deposit(40);
        myBankAcc.withdraw(99);
        myBankAcc.withdraw(999);
    }
}

Answer 1

您需要在构造函数中设置属性，如下所示:

 public BankAcc(String accountName, int accountNumber, float accountOverdraft, float currentBalance) {
    this.accountName = accountName;
    this.accountNumber = accountNumber;
    this.accountOverdraft = accountOverdraft;
    this.currentBalance = currentBalance;
}

“this”指定您访问属性的当前类。