Java “我的银行”错误消息在任何情况下都会出现,并且不会';不接受用户输入
我很难确保选项2的错误消息仅在用户输入的数字大于其银行余额时出现。然而,即使用户输入的金额小于他们的银行余额,它也会出现。再多玩弄它会让我的问题变得更糟,因为用户必须多次输入答案才能得到响应。如果关于这个问题还有一些不清楚的地方,请告诉我。这是我的第一节编程课,我还没有找到自己的解决方案,所以欢迎任何帮助Java “我的银行”错误消息在任何情况下都会出现,并且不会';不接受用户输入,java,Java,我很难确保选项2的错误消息仅在用户输入的数字大于其银行余额时出现。然而,即使用户输入的金额小于他们的银行余额,它也会出现。再多玩弄它会让我的问题变得更糟,因为用户必须多次输入答案才能得到响应。如果关于这个问题还有一些不清楚的地方,请告诉我。这是我的第一节编程课,我还没有找到自己的解决方案,所以欢迎任何帮助 //Part 2 double balance = 0; BankAccount myBankAccount=new BankAccount(5
//Part 2
double balance = 0;
BankAccount myBankAccount=new BankAccount(500.00);
myBankAccount.deposit(1000.00);
System.out.println(myBankAccount.getBalance());
myBankAccount.withdrawal(600.00);
System.out.println(myBankAccount.getBalance());
//Part 3
Scanner input=new Scanner(System.in);
int choice;
System.out.println("Welcome to M&T Bank!");
System.out.println("Select a Banking Option Below");
myBankAccount.menu();
choice=input.nextInt();
while(choice<4&&choice>0)
{
if(choice==1)
{
System.out.println("How much will you deposit?");
myBankAccount.deposit(input.nextDouble());
}
else if(choice==2)
{
System.out.println("How much will you withdraw?");
if(input.nextDouble()>balance)
{
while(input.nextDouble()>balance)
{
System.out.println("Your account has insufficient funds. Your balance is: "+myBankAccount.getBalance());
System.out.println("How much will you withdraw?");
myBankAccount.withdrawal(input.nextDouble());
}
}
else
{
myBankAccount.withdrawal(input.nextDouble());
}
}
else if(choice==3)
{
System.out.println("Your balance is: "+myBankAccount.getBalance());
}
System.out.println("Welcome to M&T Bank!");
System.out.println("Select a Banking Option Below");
myBankAccount.menu();
choice=input.nextInt();
}
if(choice==4)
{
System.out.println("Thank you! Goodbye.");
}
//第2部分
双平衡=0;
银行账户myBankAccount=新银行账户(500.00);
我的银行账户。存款(1000.00);
System.out.println(myBankAccount.getBalance());
我的银行账户提款(600.00);
System.out.println(myBankAccount.getBalance());
//第三部分
扫描仪输入=新扫描仪(System.in);
智力选择;
System.out.println(“欢迎来到M&T银行!”);
System.out.println(“选择下面的银行选项”);
myBankAccount.menu();
choice=input.nextInt();
while(选项0)
{
如果(选项==1)
{
System.out.println(“您将存款多少?”);
myBankAccount.deposit(input.nextDouble());
}
else if(选项==2)
{
System.out.println(“您将提取多少?”);
if(input.nextDouble()>balance)
{
while(input.nextDouble()>balance)
{
System.out.println(“您的帐户资金不足。您的余额为:“+myBankAccount.getBalance()”);
System.out.println(“您将提取多少?”);
myBankAccount.drawing(input.nextDouble());
}
}
其他的
{
myBankAccount.drawing(input.nextDouble());
}
}
else if(选项==3)
{
System.out.println(“您的余额为:+myBankAccount.getBalance());
}
System.out.println(“欢迎来到M&T银行!”);
System.out.println(“选择下面的银行选项”);
myBankAccount.menu();
choice=input.nextInt();
}
如果(选项==4)
{
System.out.println(“谢谢!再见”);
}
每次调用input.nextDouble()
,您都在读取另一个输入。而且,你是在不计余额的情况下提款。另外,余额
为0。试试这个:
else if (choice == 2) {
System.out.println("How much will you withdraw?");
double amount;
while ((amount = input.nextDouble()) > myBankAccount.getBalance()) {
System.out.println("Your account has insufficient funds. Your balance is: "+myBankAccount.getBalance());
System.out.println("How much will you withdraw?");
}
myBankAccount.withdrawal(amount);
}
BankAccount myBankAccount=新银行账户(500.00);
我的银行账户。存款(1000.00);
System.out.println(myBankAccount.getBalance());
我的银行账户提款(600.00);
System.out.println(myBankAccount.getBalance());
扫描仪输入=新扫描仪(System.in);
int choice=input.nextInt();
而(选项>4 | |选项<1){
扫描仪输入=新扫描仪(System.in);
int choice=input.nextInt();}
System.out.println(“欢迎来到M&T银行!”);
System.out.println(“选择下面的银行选项”);
myBankAccount.menu();
开关(选择){
案例1:{
System.out.println(“您将存款多少?”);
myBankAccount.deposit(input.nextDouble());}
案例2:{
System.out.println(“您将提取多少?”);
while(input.nextDouble()>myBankAccount.getBalance()){
System.out.println(“您的帐户资金不足”);
System.out.println(“您的余额为:+myBankAccount.getBalance());
System.out.println(“您将提取多少?”);}
myBankAccount.drawing(input.nextDouble());
}
案例3:System.out.println(“您的余额为:+myBankAccount.getBalance());
案例4:System.out.println(“谢谢!再见”);
语言?我们无法读懂您的心思!抱歉,是Java。
BankAccount myBankAccount = new BankAccount(500.00);
myBankAccount.deposit(1000.00);
System.out.println(myBankAccount.getBalance());
myBankAccount.withdrawal(600.00);
System.out.println(myBankAccount.getBalance());
Scanner input=new Scanner(System.in);
int choice = input.nextInt();
while (choice > 4 || choice < 1){
Scanner input=new Scanner(System.in);
int choice = input.nextInt();}
System.out.println("Welcome to M&T Bank!");
System.out.println("Select a Banking Option Below");
myBankAccount.menu();
Switch(choice){
case 1:{
System.out.println("How much will you deposit?");
myBankAccount.deposit(input.nextDouble());}
case 2:{
System.out.println("How much will you withdraw?");
while(input.nextDouble() > myBankAccount.getBalance(){
System.out.println("Your account has insufficient funds.");
System.out.println("Your balance is: "+myBankAccount.getBalance());
System.out.println("How much will you withdraw?");}
myBankAccount.withdrawal(input.nextDouble());
}
case 3: System.out.println("Your balance is: "+myBankAccount.getBalance());
case 4 : System.out.println("Thank you! Goodbye.");