Command pattern to provide “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 .
24 Freelancer bietetn im Durchschnitt $277 für diesen Job an
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