Design Problems Three design problems are listed on the pages that follow. Select the most appropriate design pattern to use to address the problem and clearly motivate how it addresses the problem. Furthermore, show an appropriate class diagram followed by enough code fragments to illustrate the implementation of your pattern. To clarify, you will do three things for each problem. First, list a pattern that you think best solves the problem along with justification for why you chose it/ why it works. Second, draw UML that represents that pattern in the context of the problem. Third, include code fragments/snippets that illustrate application of the pattern. 10. (20 points). You have been hired to work for a web-based personal financial management service (like mint.com). Users can get an overview of their financial situation and they can add checking, savings and credit card accounts from different banks that are conveniently compiled into one or more views. Users can access this financial management service either through a desktop application or a mobile device like an iPhone which have different screen sizes and interaction capabilities and hence different views may be required. Bank accounts are checked periodically and whenever a new transaction is detected views must be updated. Design Problems Three design problems are listed on the pages that follow. Select the most appropriate design pattern to use to address the problem and clearly motivate how it addresses the problem. Furthermore, show an appropriate class diagram followed by enough code fragments to illustrate the implementation of your pattern. To clarify, you will do three things for each problem. First, list a pattern that you think best solves the problem along with justification for why you chose it/ why it works. Second, draw UML that represents that pattern in the context of the problem. Third, include code fragments/snippets that illustrate application of the pattern. 10. (20 points). You have been hired to work for a web-based personal financial management service (like mint.com). Users can get an overview of their financial situation and they can add checking, savings and credit card accounts from different banks that are conveniently compiled into one or more views. Users can access this financial management service either through a desktop application or a mobile device like an iPhone which have different screen sizes and interaction capabilities and hence different views may be required. Bank accounts are checked periodically and whenever a new transaction is detected views must be updated
