MinMaxAccount

[Ela-Zaman]

Overview

You are an intern in the "CoinBox" Bank's IT department. Your supervisor asked you to add some functionality to the previous code. The code contains a large class BankingAccount with many methods including:

Method/Constructor	Description
BankingAccount(Startup s)	constructs a BankingAccount object using information in the Startup object
void debit(int debit)	records the given debit
void credit(int credit)	records the given credit
int getBalance()	returns current balance

Your job is to add a class MinMaxAccount that will calculate the minimum and maximum balances ever recorded for the account.

Assumptions

1. Startup includes basic information such as account_no, account_type and a method that returns the initial balance.
2. Only the debit and credit methods change an account's balance.

Task

1. Design the class Startup that includes minimum basic information about the account. You should provide a method getInitialBalance() that returns the initial balance.
2. Implement the class BankingAccount. The account's constructor sets the initial balance based on the Startup information.
3. Design a new class MinMaxAccount whose instances can be used in place of a BankingAccount object but include new behaviour of remembering the minimum and maximum balances ever recorded for the account. You should provide the same methods as the superclass, as well as the following new behaviour:

Method/Constructor	Description
MinMaxAccount(Startup s)	constructs a MinMaxAccount object using information in the Startup object
int getMin()	returns minimum balance
int getMax()	returns maximum balance

Source

https://practiceit.cs.washington.edu/problem/view/bjp5/chapter9/e9-MinMaxAccount

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