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Java

Josh Keenan
Josh Keenan
20,315 Points
Posted by Josh Keenan
Josh Keenan
20,315 Points

[SOLVED]Access private variables in a subclass

EDIT: Realised I was using the wrong name, I was using the parameter name and not the variable where I was storing stuff, but this has shown me that rubber ducks are the best idea ever, talking to myself and anyone who reads this helped, so thanks for reading <3

Apologies as that may not be the right phrasing but I'm brand new to java, which is making this debugging all the harder.

I am trying to calculate the interest for an imaginary savings account but I am unable to access bal in the SavingsAccount, can someone help me out and explain what's wrong? Many thanks <3

FYI there are different methods I was trying to use to get this to work, which I have left in this snippet, so I am aware they are there and not right or the same, I am a novice Java programmer trying different things I can think of to get this to work!

public class BankAccount {

    private int balance;
    private int accountNumber;
    private String holder;


    // Constructor
    public BankAccount(int id, String name, int bal)
    {
        accountNumber = id;
        holder = name;
        balance = bal;
    }


    public String toString()
    {
        return String.format("Account number: %d\nAccount holder: %s\n" +
                        "Account balance: %d\n", accountNumber, holder,
                        balance);
    }


    // method to deposit into account, checks amount is valid returns bool
    public void deposit(int amount)
    {
        try
        {
            balance += amount;
            System.out.format("Deposited £%d\n", amount);
        }

        catch (ArithmeticException e)
        {
            System.out.println("Invalid amount\n");
        }
    }


    // method to withdraw from account
    public void withdraw(int amount)
    {
        try
        {
            balance -= amount;
            System.out.format("Withdrawn £%d\n", amount);
        }

        catch (ArithmeticException e)
        {
            System.out.println("Insufficient Funds!\n");
        }
    }


    // getter to return id
    public int getId()
    {
        System.out.println("Account number: ");
        return accountNumber;
    }


    // getter to return account holder name
    public String getName()
    {
        System.out.println("Account holder: ");
        return holder;
    }


    public int getBalance()
    {
        System.out.println("Account balance: £");
        return balance;
    }

//    public static void main(String[] args)
// {
//
//        BankAccount account = new BankAccount(233, "John", 55);
//        account.deposit(500);
//        account.withdraw(50);
//
//        System.out.println(account.getId() + "\n");
//        System.out.println(account.getBalance() + "\n");
//    }

} // The end.

import java.lang.Math;

public class SavingsAccount extends BankAccount {

    private int rate;
    private int storageVar;

    // Constructor
    public SavingsAccount(int id, String name, int bal, int val)
    {
        super(id, name, bal);
        rate = val;
    }


    public int getRate()
    {
        return rate;
    }


    public int setRate(int newRate)
    {
        rate = newRate;
        return rate;
    }


    public int rateCalculator()
    {
        storageVar = bal * (1 + (rate / 100));
        System.out.format("Balance in 1 year: £%d\n", storageVar);
        storageVar = this.bal * Math.pow((1 + (rate / 100)), 5);
        System.out.format("Balance in 5 years: £%d\n", storageVar);
        storageVar = this.bal * Math.pow((1 + (rate / 100)), 10);
        System.out.format("Balance in 10 years: £%d\n", storageVar);

    }



}
Josh Keenan
Josh Keenan
20,315 Points
Josh Keenan
Josh Keenan
20,315 Points

apologies some formatting has broken on transfer from IDE to treehouse! Will try to fix it

1 Answer

Josh Keenan
Josh Keenan
20,315 Points
Josh Keenan
Josh Keenan
20,315 Points

Error being thrown: 

SavingsAccount.java:31: error: cannot find symbol
        storageVar = bal * (1 + (rate / 100));
                     ^
  symbol:   variable bal
  location: class SavingsAccount
SavingsAccount.java:33: error: cannot find symbol
        storageVar = bal * Math.pow((1 + (rate / 100)), 5);
                     ^
  symbol:   variable bal
  location: class SavingsAccount
SavingsAccount.java:35: error: cannot find symbol
        storageVar = this.bal * Math.pow((1 + (rate / 100)), 10);
                         ^
  symbol: variable bal