我想建立一個簡單的銀行賬戶程序,即從餘額中扣除提款金額,但是當我撥打部門方法時,它不會執行扣除操作。java簡單的銀行賬戶程序
如何獲得此程序的工作,我不確定是否應該使部門方法無效或使其返回一個值。
import java.util.Scanner;
public class JavaApplication7 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Account account1 = new Account(50.0);
System.out.printf("account1 balance: $%.2f\n", account1.getBalance());
double withdrawalAmount;
System.out.print("Enter withdrawal amount for account1: ");
withdrawalAmount = input.nextDouble();
System.out.printf("\nsubtracting %.2f from account1 balance\n", withdrawalAmount);
account1.dept(withdrawalAmount);
System.out.printf("account1 balance: $%.2f\n", account1.getBalance());
}
}
public class Account {
private double balance; // instance variable that stores the balance
public Account(double initialBalance)
{
if (initialBalance > 0.0)
balance = initialBalance;
}
public double dept (double dept1){
dept1=balance-dept1;
return dept1;
}
public double getBalance()
{
return balance;
}
}
* 「喜我嘗試..」 *試着找你的shift鍵。在句子開始處應用它,像Java這樣的專有名詞,以及單詞I.這樣做可以使文本更易於閱讀。不這樣做使得文字就像試圖讀「嘟'」。 –
對代碼塊使用一致的邏輯縮進。代碼的縮進旨在幫助人們理解程序流程。 –