
Explanation of Solution
Modification of “BankAccount” class:
- The modification of “BankAccount” class can be done by adding new instance variable for monitorin...
Explanation of Solution
Method for deducting the fee:
- The “calculateTransFee()” method is defined to add the instance variable.
- An instance variable is added to calculate, deduct the fee and reset the variable “numOfTransactions” as zero.
//Define void method
public void calculateTransFee()
{
//Check for transactions
�...
Explanation of Solution
Additional instance variables:
- The instance variable required is “numOfTransactions”.
- The variable “numOfTransactions” is incremented by one value inside “withdraw()” and “deposit()” methods.
- The statement used for deducting the fee at the end of month is as follows,
//Required method
numOfTransactions++;
- Here, the variable is initialized as zero inside the constructors.
An instance variable is added to calculate, deduct the fee and reset the variable “numOfTransactions” as zero in the “calculateTransFee()” method...
Explanation of Solution
Tracing the code:
Let us assume the following method calls for tracing the object code.
//Declare the balance in account
BankAccount harryAccount(1000);
//Deposit the required amount
harryAccount.deposit(50);
harryAccount.deposit(500);
harryAccount.deposit(250);
//Withdraw the required amount
harryAccount.withdraw(100);
//Deposit the required amount
harryAccount.deposit(70);
harryAccount.deposit(80);
//Calculate the balance
harryAccount...

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Chapter 8 Solutions
Big Java Late Objects
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