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Objects: Instances of Classes Practice Test

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Q1

Consider the following Java class and code; after executing it, what is the state of checking's balance?


// Bank account management example

class BankAccount {

    private String owner;

    private double balance;

    public BankAccount(String owner, double startingBalance) {

        this.owner = owner;

        balance = startingBalance;

    }

    public void deposit(double amount) {

        balance += amount;

    }

    public boolean withdraw(double amount) {

        if (amount <= balance) {

            balance -= amount;

            return true;

        }

        return false;

    }

    public double getBalance() {

        return balance;

    }

}

class Main {

    public static void main(String[] args) {

        BankAccount checking = new BankAccount("Ava", 200.0);

        BankAccount savings = new BankAccount("Ben", 500.0);

        checking.deposit(50.0);

        savings.withdraw(100.0);

        checking.withdraw(120.0);

        // (No printing here)

    }

}

```​

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