Bank account array list

Question

I'm very lost and need a push in the right direction. I am trying to get the balance of a bank account which is an array list of accounts and balances. The class I am working on is the Bank class. There is also a BankAccount class and a BankTester class.
//deposit funds
     public void deposit(int accountNumber, double amount)
          double bal = (accountNumber).getBalance();
          double newBalance = bal + amount;
          balance = newBalance;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is the error I am getting that I do not understand.
C:\Users\matthew\Documents\FLCC\CSC190\Exercise7_1\Bank.java:34: int cannot be dereferenced
          double bal = (accountNumber).getBalance();
          ^
C:\Users\matthew\Documents\FLCC\CSC190\Exercise7_1\Bank.java:36: cannot find symbol
symbol : variable balance
location: class Bank
          balance = newBalance;
          ^

Answer 1

mgp wrote:
I'm very lost and need a push in the right direction. I am trying to get the balance of a bank account which is an array list of accounts and balances. The class I am working on is the Bank class. There is also a BankAccount class and a BankTester class.
//deposit funds
     public void deposit(int accountNumber, double amount)
          double bal = (accountNumber).getBalance();
          double newBalance = bal + amount;
          balance = newBalance;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is the error I am getting that I do not understand.
C:\Users\matthew\Documents\FLCC\CSC190\Exercise7_1\Bank.java:34: int cannot be dereferenced
          double bal = (accountNumber).getBalance();
OK, here is what I think is happening. I do not see a definition of accountNumber anyplace that would override the int definition in the parameter list, and you are trying to access it as a object with a method getBalance()--that is what the dereference error is saying--when you put the parentesis around the variable and then attaching a method to it you are trying to access the enclosed variable as an object. In any case it is not an object and it does not contain the method getBalance().
          ^
C:\Users\matthew\Documents\FLCC\CSC190\Exercise7_1\Bank.java:36: cannot find symbol
symbol : variable balance
location: class Bank
          balance = newBalance;
          ^balance is undefined in your Bank class.