未定义Double类型的deposit（double）方法

Question

in class BankAccount:

public double deposit(double PlusAmount) {
       balance += PlusAmount;
       return balance;

in Main class

    double PlusAmount = Double.parseDouble(dispFieldText);
 double MinAmount = Double.parseDouble(dispFieldText2);

  ba.balance.deposit(PlusAmount);
  ba.balance.withdraw(MinAmount);

i've tried to change double -> Double but it did't help. Please, help.

Answer 1

The problem is that you're trying to call deposit on ba.balance which is of type Double .

Assuming ba is of type BankAccount , you should call the methods like this:

ba.deposit(PlusAmount);
ba.withdraw(MinAmount);