java program

Your system design should conform to the Open Closed Principle so that your design should easily support new functions (e.g. change of name of security) and securities, for example, creation of BankNote record which is a subclass of Security.

You MUST apply the following design patterns for your new system

Command pattern to provide the “create”, “display”, “deposit”, “withdraw”, “undo”,

“redo” and “show undo/redo list” functions

Factory pattern or Abstract Factory Pattern to create different Command objects and Security objects (e.g. Bond object, Stock object, etc.)

Memento pattern to provide “Undo” and “Redo” functions

Skills: Java

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About the Employer:
( 1 review ) HongKong, Hong Kong

Project ID: #12023049

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I am Oracle Certified Java Professional having 8 years of experience in Software development and Enterprise System Integration on Java platform. I have a strong bias towards open-source customization and experience in More

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