atmcasestudy

7/18/2019 ATMCaseStudy

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Dale Roberts

Object Oriented Programming using JavaObject Oriented Programming using Java

- OOD to OOP: ATM Case Study- OOD to OOP: ATM Case Study

Dale Roberts, Lecturer

Computer Science, IUPUI

E-mail: [email protected]

Department of Computer and Information Science,

School of Science, IUPUI


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Dale Roberts

Starting to Program the Classes of the ATM SystemStarting to Program the Classes of the ATM System

VisibilityVisibility

Attributes normally should be private, methodsAttributes normally should be private, methodsinvoked by clients should be publicinvoked by clients should be public

Visibility markers in UMLVisibility markers in UML

A plus sign (+) indicates public visibilityA plus sign (+) indicates public visibility

A minus sign (-) indicates private visibilityA minus sign (-) indicates private visibility

NavigabilityNavigability

avigability arro!s indicate in !hich direction anavigability arro!s indicate in !hich direction an

association can be traversedassociation can be traversed

"idirectional navigability"idirectional navigability

Associations !ith navigability arro!s at both ends or noAssociations !ith navigability arro!s at both ends or no

navigability arro!s at all can be traversed in either directionnavigability arro!s at all can be traversed in either direction


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ig! "!#$ig! "!#$ % Class diagram &ith visibility mar'ers!% Class diagram &ith visibility mar'ers!


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Dale Roberts"

ig! "!#(ig! "!#( % Class diagram &ith navigability arro&s!% Class diagram &ith navigability arro&s!


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Dale Roberts#

Starting to Program the Classes of the ATM System )Cont!*Starting to Program the Classes of the ATM System )Cont!*

+m,lementing the ATM system from its -M.+m,lementing the ATM system from its -M.

design )for each class*design )for each class*#eclare a#eclare a publicpublicclass !ith the name in the $irstclass !ith the name in the $irst

compartment and an empty no-argument constructorcompartment and an empty no-argument constructor

#eclare instance variables based on attributes in the#eclare instance variables based on attributes in the

second compartmentsecond compartment

#eclare re$erences to other ob%ects based on#eclare re$erences to other ob%ects based on

associations described in the class diagramassociations described in the class diagram

#eclare the shells o$ the methods based on the#eclare the shells o$ the methods based on the

operations in the third compartmentoperations in the third compartmentUse the return typeUse the return type voidvoidi$ no return type has been speci$iedi$ no return type has been speci$ied


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Dale Roberts$



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%OutlineOutline

withdrawal.ja

va

Class for

Withdrawal

Empt& no-ar'ument

constructor


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)OutlineOutline

withdrawal.ja

va

Declare instance

*ariables


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ig! "!#(ig! "!#( % Class diagram &ith navigability arro&s!% Class diagram &ith navigability arro&s!


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++OutlineOutline

withdrawal.ja

va

Declare references to other

obects


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O li


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+!OutlineOutline

withdrawal.ja

va

Declare shell of a method ith

return t&pe *oid


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Ac'no&ledgementsAc'no&ledgements

Deitel, Java How to Program

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