We want to change the BankAccount class so that all accounts will have a monthly fee.The instance variable monthlyFee will hold the monthly fee.Which of the following constructors properly sets the monthly fee to a default value of 20?
A) public BankAccount (double initialBalance)
{
balance = initialBalance;
monthlyFee = 20;
}
B) public Bankaccount (double initialBalance)
{
balance = initialBalance;
double monthlyFee = 20;
}
C) public BankAccount (double initialBalance)
{
balance = initialBalance;
monthlyFee = initialBalance-20;
}
D) public BankAccount (double initialBalance)
{
balance = initialBalance-20;
}

Question

We want to change the BankAccount class so that all accounts will have a monthly fee.The instance variable monthlyFee will hold the monthly fee.Which of the following constructors properly sets the monthly fee to a default value of 20? 
A) public BankAccount (double initialBalance)
{
balance = initialBalance;
monthlyFee = 20;
}
B) public Bankaccount (double initialBalance)
{
balance = initialBalance;
double monthlyFee = 20;
}
C) public BankAccount (double initialBalance)
{ 
balance = initialBalance;
monthlyFee = initialBalance-20;
}
D) public BankAccount (double initialBalance)
{ 
balance = initialBalance-20;
}

Quizplus · Accepted Answer

Option A properly sets the monthlyFee instance variable to a default value of 20 by including it in the constructor and assigning it directly. Option B assigns the value of 20 to a local variable, which means it cannot be accessed outside of the constructor. Option C subtracts 20 from the initialBalance and assigns it to monthlyFee, which does not make sense as the monthly fee should be a fixed value. Option D subtracts 20 from the initialBalance, but does not set a value for monthlyFee. Therefore, option A is the best choice.

We Want to Change the BankAccount Class So That All