- 作业标题：CSCI 3132 - Assignment 5: Reuse with Components
- 课程名称：Dalhouse University CSCI 3132 Object Orientation and Generic Programming
- 完成周期：2天
You work for a small Canadian credit union. You have developed a JavaBean component called
BankAccountBean that provides basic deposit and withdraw functions and notifies listeners
when large transactions are made and when an account’s balance goes below a threshold.
Review the BankAccount* and Account* code and run the test code to see the current
behavior.
。。。
Part A: Connecting Components
You want to add transaction recording functionality for bank accounts. A transaction is any operation that changes an account’s balance. Rather than implement this from scratch, you purchase a TimestampedEventRecorder component from Beans-R-Us, Inc1. Now you need to connect this component to your bank account component.
Review the TimestampedEvent* code and run the test code to see the current behaviour.
。。。
Part B: Composing Components
The credit union is planning to provide online banking services. Desired features include:
- Depositing into an account.
- Withdrawing from an account.
- Getting an account’s balance.
- Transferring funds from one account into another account.
- Reviewing the past N transactions for a given account (output these to the console).
。。。
Marking Scheme (/20)
5 BankAccountBean generates TimestampedEvents for all transactions.
3 Test code for BankAccountBean updated according to specifications in part A.
5 Methods implemented in OnlineBanking class for each of the 5 features.
2 OnlineBanking follows the façade design pattern.
2 No changes are made to existing code for part B.
3 Online banking test class created according to specifications in part B.
Completing the bonus provides up to 4 marks – anything above 20 will be incorporated into
your final assignment mark.
