Chapter 8, Problem 13RE

Explanation of Solution

Card for “BankAccount” class:

• In the class “BankAccount”, the method “getBalance()” acts as an accessor method.
  • The variable “balance” is declared and its value is computed and return to the function where it is called.
• Mutator method is a method that manipulates the internal data of an object.
• In the class “BankAccount”, the method “deposit()”, and “withdraw()” act as mutator methods.
  • The value of “balance” variable is changed whenever a call is made on the methods “deposit()”, and “withdraw()”.
• The sticky notes for “BankAccount” class are shown below:

• When an object is constructed using the constructor “BankAccount()”, the initial value “0” is assigned to the variable “balance” as shown below: