M251 – Object Oriented Programming Using Java – Simple Class Diagram

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Assignment Task

Overview:

A new bank wants to make a simple application to keep track of all accounts and transactions. In this TMA, it is required to help the bank manager implement the required application.

Requirements:

After a quick meeting with the bank manager, you got the following information:

– It is required to store all bank accounts in one collection and all the transactions happened in another collection.

– Each account has a unique account number, a holder and balance. There is a specific prefix (common for all accounts) that should be added to the holder’s civil id to create the unique account number. In addition, it is not allowed for a holder to have more than one account. Furthermore, only three transactions are allowed on any account: deposit, withdrawal and transfer money to another account.

– Each holder has a unique civil ID (national id), a name and other attributes (add at least 2 attributes from your choice).

– For each transaction, it is required to store the account(s) affected, amount of money, date, and if they are successful. There are 3 types of transactions: deposit, withdrawal and transfer.

Moreover, you have been informed that the following operations happen frequently:

– Creating a new account

– Deposit money into a specified account

– Withdrawal money from a specified account

– Transfer money between two specified accounts

– Printing details of the transaction where the maximum amount of money has been transferred between 2 accounts

– Saving all accounts and transactions into a text file.

For accounts, they should be sorted in ascending order (according to the civil id)

Analysis:

Q1: There are common attributes and methods between the three types of transactions. What is the best choice for designing and writing their codes? Explain your answer.

Q2: Draw a simple class diagram showing only relationships between the classes.

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• Posted on : December 09th, 2019

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