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 .
21 Freelancer bieten im Durchschnitt $288 für diesen Job
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