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TA貢獻1848條經驗 獲得超10個贊
我發現我使用.nextDouble了兩次的錯誤。從現在開始,我會確保在使用它之前先將它保存在變量中。這就是我更新代碼的方式。
package com.amit;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
BankAccount account = new BankAccount();
boolean option = true;
Scanner scanner = new Scanner(System.in);
while (option){
System.out.println("Press 1 For Deposite. Press 2 For Withdrawal. Press 3 For Exit");
boolean hasvalue = scanner.hasNextInt();
if(hasvalue){
//means user has entered integer value now check if its in 1, 2 if its other
// than this we'll take him out of program to print balance
int userValEntered = scanner.nextInt();
if (userValEntered == 1){
//code for deposite
System.out.println("Enter Amount To Deposite");
Scanner amountToDeposite = new Scanner(System.in);
account.setBalance(amountToDeposite.nextDouble());
}else if (userValEntered == 2) {
//Code for withdrawal
System.out.println("Enter Amount To Withdraw");
Scanner amountToWithdraw = new Scanner(System.in);
double withdrawAmt = amountToWithdraw.nextDouble();
if (withdrawAmt >= account.getBalance()){
System.out.println("Unable to Withdraw Given Amount, Try Other Amount");
continue;
}else {
double currentBalance = account.getBalance() - withdrawAmt;
account.setBalance(currentBalance);
System.out.println("Thanks for Doing Business With us");
}
}else{
//if user enters anything other than 1 or 2
break;
}
}else {
//if user enters anything other than integer
break;
}
}
//code to print balance here.
System.out.println("Your Balance is: "+account.getBalance());
}
}
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