SlideShare une entreprise Scribd logo
1  sur  12
Iterator Pattern Presented by Baljeet Sandhu - 21 st  June 06 Based on  Head First Design Patterns  by  Elisabeth Freeman, Eric Freeman, Bert Bates, Kathy Sierra
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Scenario
Inventory Item - Common to both divisions
Desktop division – Inventory Manager
Laptop division – Inventory manager
Inventory Printer
Encapsulate iteration
Implement Iterator for Laptop Division
The new design..
InventoryPrinter revised
What did we improve.. ,[object Object],[object Object],Use an interface, uniform way of accessing collections
Iterator pattern Provides a way to access the elements of an aggregate object without exposing its  underlying representation

Contenu connexe

En vedette

External Data Access with jQuery
External Data Access with jQueryExternal Data Access with jQuery
External Data Access with jQuery
Doncho Minkov
 
用JavaScript 實踐《軟體工程》的那些事兒!
用JavaScript  實踐《軟體工程》的那些事兒!用JavaScript  實踐《軟體工程》的那些事兒!
用JavaScript 實踐《軟體工程》的那些事兒!
鍾誠 陳鍾誠
 

En vedette (19)

Java Design Patterns: The State Pattern
Java Design Patterns: The State PatternJava Design Patterns: The State Pattern
Java Design Patterns: The State Pattern
 
Getting Started with IntelliJ IDEA as an Eclipse User
Getting Started with IntelliJ IDEA as an Eclipse UserGetting Started with IntelliJ IDEA as an Eclipse User
Getting Started with IntelliJ IDEA as an Eclipse User
 
Composite pattern
Composite patternComposite pattern
Composite pattern
 
Visitor Pattern
Visitor PatternVisitor Pattern
Visitor Pattern
 
Composite Design Pattern
Composite Design PatternComposite Design Pattern
Composite Design Pattern
 
JAVA design patterns and Basic OOp concepts
JAVA design patterns and Basic OOp conceptsJAVA design patterns and Basic OOp concepts
JAVA design patterns and Basic OOp concepts
 
Introduction to JSON
Introduction to JSONIntroduction to JSON
Introduction to JSON
 
Design Pattern introduction
Design Pattern introductionDesign Pattern introduction
Design Pattern introduction
 
Java EE Revisits GoF Design Patterns
Java EE Revisits GoF Design PatternsJava EE Revisits GoF Design Patterns
Java EE Revisits GoF Design Patterns
 
Writing simple web services in java using eclipse editor
Writing simple web services in java using eclipse editorWriting simple web services in java using eclipse editor
Writing simple web services in java using eclipse editor
 
Prototype pattern
Prototype patternPrototype pattern
Prototype pattern
 
External Data Access with jQuery
External Data Access with jQueryExternal Data Access with jQuery
External Data Access with jQuery
 
Reactive Programming in Java 8 with Rx-Java
Reactive Programming in Java 8 with Rx-JavaReactive Programming in Java 8 with Rx-Java
Reactive Programming in Java 8 with Rx-Java
 
JSON: The Basics
JSON: The BasicsJSON: The Basics
JSON: The Basics
 
REST & RESTful Web Services
REST & RESTful Web ServicesREST & RESTful Web Services
REST & RESTful Web Services
 
RESTful Web Services
RESTful Web ServicesRESTful Web Services
RESTful Web Services
 
用JavaScript 實踐《軟體工程》的那些事兒!
用JavaScript  實踐《軟體工程》的那些事兒!用JavaScript  實踐《軟體工程》的那些事兒!
用JavaScript 實踐《軟體工程》的那些事兒!
 
Design Beautiful REST + JSON APIs
Design Beautiful REST + JSON APIsDesign Beautiful REST + JSON APIs
Design Beautiful REST + JSON APIs
 
JSON and REST
JSON and RESTJSON and REST
JSON and REST
 

Plus de melbournepatterns

Abstract Factory Design Pattern
Abstract Factory Design PatternAbstract Factory Design Pattern
Abstract Factory Design Pattern
melbournepatterns
 

Plus de melbournepatterns (20)

An Introduction to
An Introduction to An Introduction to
An Introduction to
 
State Pattern from GoF
State Pattern from GoFState Pattern from GoF
State Pattern from GoF
 
Concurrency Patterns
Concurrency PatternsConcurrency Patterns
Concurrency Patterns
 
Continuous Integration, Fast Builds and Flot
Continuous Integration, Fast Builds and FlotContinuous Integration, Fast Builds and Flot
Continuous Integration, Fast Builds and Flot
 
Command Pattern
Command PatternCommand Pattern
Command Pattern
 
Code Contracts API In .Net
Code Contracts API In .NetCode Contracts API In .Net
Code Contracts API In .Net
 
LINQ/PLINQ
LINQ/PLINQLINQ/PLINQ
LINQ/PLINQ
 
Gpu Cuda
Gpu CudaGpu Cuda
Gpu Cuda
 
Facade Pattern
Facade PatternFacade Pattern
Facade Pattern
 
Phani Kumar - Decorator Pattern
Phani Kumar - Decorator PatternPhani Kumar - Decorator Pattern
Phani Kumar - Decorator Pattern
 
Composite Pattern
Composite PatternComposite Pattern
Composite Pattern
 
Adapter Design Pattern
Adapter Design PatternAdapter Design Pattern
Adapter Design Pattern
 
Prototype Design Pattern
Prototype Design PatternPrototype Design Pattern
Prototype Design Pattern
 
Factory Method Design Pattern
Factory Method Design PatternFactory Method Design Pattern
Factory Method Design Pattern
 
Abstract Factory Design Pattern
Abstract Factory Design PatternAbstract Factory Design Pattern
Abstract Factory Design Pattern
 
A Little Lisp
A Little LispA Little Lisp
A Little Lisp
 
State Pattern in Flex
State Pattern in FlexState Pattern in Flex
State Pattern in Flex
 
Active Object
Active ObjectActive Object
Active Object
 
Extract Composite Talk Andy
Extract Composite Talk AndyExtract Composite Talk Andy
Extract Composite Talk Andy
 
Selenium Interpreter
Selenium InterpreterSelenium Interpreter
Selenium Interpreter
 

Dernier

VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
dipikadinghjn ( Why You Choose Us? ) Escorts
 
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
From Luxury Escort : 9352852248 Make on-demand Arrangements Near yOU
 
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
dipikadinghjn ( Why You Choose Us? ) Escorts
 
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
dipikadinghjn ( Why You Choose Us? ) Escorts
 
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
dipikadinghjn ( Why You Choose Us? ) Escorts
 
Best VIP Call Girls Morni Hills Just Click Me 6367492432
Best VIP Call Girls Morni Hills Just Click Me 6367492432Best VIP Call Girls Morni Hills Just Click Me 6367492432
Best VIP Call Girls Morni Hills Just Click Me 6367492432
motiram463
 

Dernier (20)

Webinar on E-Invoicing for Fintech Belgium
Webinar on E-Invoicing for Fintech BelgiumWebinar on E-Invoicing for Fintech Belgium
Webinar on E-Invoicing for Fintech Belgium
 
Kopar Khairane Russian Call Girls Number-9833754194-Navi Mumbai Fantastic Unl...
Kopar Khairane Russian Call Girls Number-9833754194-Navi Mumbai Fantastic Unl...Kopar Khairane Russian Call Girls Number-9833754194-Navi Mumbai Fantastic Unl...
Kopar Khairane Russian Call Girls Number-9833754194-Navi Mumbai Fantastic Unl...
 
Call Girls Koregaon Park Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Koregaon Park Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Koregaon Park Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Koregaon Park Call Me 7737669865 Budget Friendly No Advance Booking
 
(Vedika) Low Rate Call Girls in Pune Call Now 8250077686 Pune Escorts 24x7
(Vedika) Low Rate Call Girls in Pune Call Now 8250077686 Pune Escorts 24x7(Vedika) Low Rate Call Girls in Pune Call Now 8250077686 Pune Escorts 24x7
(Vedika) Low Rate Call Girls in Pune Call Now 8250077686 Pune Escorts 24x7
 
VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
VIP Call Girl in Mira Road 💧 9920725232 ( Call Me ) Get A New Crush Everyday ...
 
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
From Luxury Escort Service Kamathipura : 9352852248 Make on-demand Arrangemen...
 
Booking open Available Pune Call Girls Shivane 6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Shivane  6297143586 Call Hot Indian Gi...Booking open Available Pune Call Girls Shivane  6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Shivane 6297143586 Call Hot Indian Gi...
 
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
VIP Independent Call Girls in Andheri 🌹 9920725232 ( Call Me ) Mumbai Escorts...
 
Bandra High Profile Sexy Call Girls,9833754194-Khar Road Speciality Call Girl...
Bandra High Profile Sexy Call Girls,9833754194-Khar Road Speciality Call Girl...Bandra High Profile Sexy Call Girls,9833754194-Khar Road Speciality Call Girl...
Bandra High Profile Sexy Call Girls,9833754194-Khar Road Speciality Call Girl...
 
8377087607, Door Step Call Girls In Kalkaji (Locanto) 24/7 Available
8377087607, Door Step Call Girls In Kalkaji (Locanto) 24/7 Available8377087607, Door Step Call Girls In Kalkaji (Locanto) 24/7 Available
8377087607, Door Step Call Girls In Kalkaji (Locanto) 24/7 Available
 
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
( Jasmin ) Top VIP Escorts Service Dindigul 💧 7737669865 💧 by Dindigul Call G...
 
Vasai-Virar Fantastic Call Girls-9833754194-Call Girls MUmbai
Vasai-Virar Fantastic Call Girls-9833754194-Call Girls MUmbaiVasai-Virar Fantastic Call Girls-9833754194-Call Girls MUmbai
Vasai-Virar Fantastic Call Girls-9833754194-Call Girls MUmbai
 
Vip Call US 📞 7738631006 ✅Call Girls In Sakinaka ( Mumbai )
Vip Call US 📞 7738631006 ✅Call Girls In Sakinaka ( Mumbai )Vip Call US 📞 7738631006 ✅Call Girls In Sakinaka ( Mumbai )
Vip Call US 📞 7738631006 ✅Call Girls In Sakinaka ( Mumbai )
 
7 tips trading Deriv Accumulator Options
7 tips trading Deriv Accumulator Options7 tips trading Deriv Accumulator Options
7 tips trading Deriv Accumulator Options
 
falcon-invoice-discounting-unlocking-prime-investment-opportunities
falcon-invoice-discounting-unlocking-prime-investment-opportunitiesfalcon-invoice-discounting-unlocking-prime-investment-opportunities
falcon-invoice-discounting-unlocking-prime-investment-opportunities
 
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
VIP Call Girl Service Andheri West ⚡ 9920725232 What It Takes To Be The Best ...
 
Call Girls in New Friends Colony Delhi 💯 Call Us 🔝9205541914 🔝( Delhi) Escort...
Call Girls in New Friends Colony Delhi 💯 Call Us 🔝9205541914 🔝( Delhi) Escort...Call Girls in New Friends Colony Delhi 💯 Call Us 🔝9205541914 🔝( Delhi) Escort...
Call Girls in New Friends Colony Delhi 💯 Call Us 🔝9205541914 🔝( Delhi) Escort...
 
Best VIP Call Girls Morni Hills Just Click Me 6367492432
Best VIP Call Girls Morni Hills Just Click Me 6367492432Best VIP Call Girls Morni Hills Just Click Me 6367492432
Best VIP Call Girls Morni Hills Just Click Me 6367492432
 
Booking open Available Pune Call Girls Talegaon Dabhade 6297143586 Call Hot ...
Booking open Available Pune Call Girls Talegaon Dabhade  6297143586 Call Hot ...Booking open Available Pune Call Girls Talegaon Dabhade  6297143586 Call Hot ...
Booking open Available Pune Call Girls Talegaon Dabhade 6297143586 Call Hot ...
 
20240419-SMC-submission-Annual-Superannuation-Performance-Test-–-design-optio...
20240419-SMC-submission-Annual-Superannuation-Performance-Test-–-design-optio...20240419-SMC-submission-Annual-Superannuation-Performance-Test-–-design-optio...
20240419-SMC-submission-Annual-Superannuation-Performance-Test-–-design-optio...
 

Iterator Pattern Baljeet Sandhu 20060621