Design of “MinMaxAccount” Program plan: Create a class “MinMaxAccount” that extends the class “BankAccount”, Declare the necessary variables. Define the constructor of its own class, Call the super class constructor using “super” keyword. Assign the minimum value returned from the method “getBalance()”. Assign the maximum value returned from the method “getBalance()”. Define the method “debit()” method to record the given debit, Call the super class method “debit()”. Call the method “updateMin_Max()”. Define the method “credit()” method to record the given credit, Call the super class method “credit()”. Call the method “updateMin_Max()”. Define the method “updateMin_Max()”, Assign the value returned from the method “getBalance()”. Check whether the balance is less than the minimum balance, If it is true, set the balance as minimum balance. Otherwise, check whether the balance is greater than the maximum balance, If it is true, set the balance as maximum balance. Define the method “getMin()”, Return the minimum balance. Define the method “getMax()”, Return the maximum balance.

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Chapter 9, Problem 9E

Program Plan Intro

Design of “MinMaxAccount”

Program plan:

Create a class “MinMaxAccount” that extends the class “BankAccount”,

Declare the necessary variables.

Define the constructor of its own class,

Call the super class constructor using “super” keyword.

Assign the minimum value returned from the method “getBalance()”.

Assign the maximum value returned from the method “getBalance()”.

Define the method “debit()” method to record the given debit,

Call the super class method “debit()”.

Call the method “updateMin_Max()”.

Define the method “credit()” method to record the given credit,

Call the super class method “credit()”.

Call the method “updateMin_Max()”.

Define the method “updateMin_Max()”,

Assign the value returned from the method “getBalance()”.

Check whether the balance is less than the minimum balance,

If it is true, set the balance as minimum balance.

Otherwise, check whether the balance is greater than the maximum balance,

If it is true, set the balance as maximum balance.

Define the method “getMin()”,

Return the minimum balance.

Define the method “getMax()”,

Return the maximum balance.

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