Question

JAVA,编程问题。各位大神，帮帮忙啊。

编写一个程序，并自定义一个异常类，完成如下要求。

定义一个银行类，包括：

存款余额 变量balance

存款操作 方法 deposite()

取款操作 方法 withdraw()

获取余额操作方法getBalance()

如果银行余额少于取款额时，显示当前余额，并告知不能取款，否则显示取款成功的信息。

Answer 1

public class Bank {

private double balance;

public double deposite(double moneyToSave){//save money to bank
System.out.println(moneyToSave + " $ is savied to your account");
return moneyToSave;
}

public void withdraw(double money) throws BankException{//get money from bank
if(balance < money){
System.out.println("Withdraw failure for insufficient money, the balance now is: " + balance);
throw new BankException();
}else{
System.out.println("withdraw success!");;
}
}

public double getBalance(){
return balance;
}

}

class BankException extends Exception{//自定义银行异常类

public BankException(){
System.out.println("System error, please contact bank 95566 for solution");
}
}