J.6. Class DepositSlot

Table of contents:

Class DepositSlot (Fig. J.5) represents the deposit slot of the ATM. This class simulates the functionality of a real hardware deposit slot. DepositSlot has no attributes and only one methodIsDepositEnvelopeReceived (lines 710)which indicates whether a deposit envelope was received.

Figure J.5. Class DepositSlot represents the ATM's deposit slot.

 1 // DepositSlot.cs
 2 // Represents the deposit slot of the ATM
 3 public class DepositSlot
 4 {
 5 // indicates whether envelope was received (always returns true,
 6 // because this is only a software simulation of a real deposit slot)
 7 public bool IsDepositEnvelopeReceived()
 8 {
 9 return true; // deposit envelope was received
10 } // end method IsDepositEnvelopeReceived
11 } // end class DepositSlot

Recall from the requirements document that the ATM allows the user up to two minutes to insert an envelope. The current version of method IsDepositEnvelopeReceived simply returns true immediately (line 9), because this is only a software simulation, so we assume that the user inserts an envelope within the required time frame. If an actual hardware deposit slot were connected to our system, method IsDepositEnvelopeReceived would be implemented to wait for a maximum of two minutes to receive a signal from the hardware deposit slot indicating that the user has indeed inserted a deposit envelope. If IsDepositEnvelopeReceived were to receive such a signal within two minutes, the method would return TRue. If two minutes were to elapse and the method still had not received a signal, then the method would return false.

J 7 Class Account



    Introduction to Computers, the Internet and Visual C#

    Introduction to the Visual C# 2005 Express Edition IDE

    Introduction to C# Applications

    Introduction to Classes and Objects

    Control Statements: Part 1

    Control Statements: Part 2

    Methods: A Deeper Look


    Classes and Objects: A Deeper Look

    Object-Oriented Programming: Inheritance

    Polymorphism, Interfaces & Operator Overloading

    Exception Handling

    Graphical User Interface Concepts: Part 1

    Graphical User Interface Concepts: Part 2


    Strings, Characters and Regular Expressions

    Graphics and Multimedia

    Files and Streams

    Extensible Markup Language (XML)

    Database, SQL and ADO.NET

    ASP.NET 2.0, Web Forms and Web Controls

    Web Services

    Networking: Streams-Based Sockets and Datagrams

    Searching and Sorting

    Data Structures



    Appendix A. Operator Precedence Chart

    Appendix B. Number Systems

    Appendix C. Using the Visual Studio 2005 Debugger

    Appendix D. ASCII Character Set

    Appendix E. Unicode®

    Appendix F. Introduction to XHTML: Part 1

    Appendix G. Introduction to XHTML: Part 2

    Appendix H. HTML/XHTML Special Characters

    Appendix I. HTML/XHTML Colors

    Appendix J. ATM Case Study Code

    Appendix K. UML 2: Additional Diagram Types

    Appendix L. Simple Types


    Visual C# How to Program
    Visual C# 2005 How to Program (2nd Edition)
    ISBN: 0131525239
    EAN: 2147483647
    Year: 2004
    Pages: 600

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