java program -- 2

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: #12023122

7 freelancers are bidding on average $196 for this job


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$210 HKD in 2 days
(2 Reviews)

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$200 HKD in 1 day
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$220 HKD in 3 days
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$100 HKD in 5 days
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$240 HKD in 14 days
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$200 HKD in 3 days
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Hello, I am Ankit Parmar. I have 6 years of exp with Java. I would like to message me so we can discuss about this job. Thanks, Ankit

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