DESIGN PATTERNS -CREATIONAL PATTERNS WATTANAPON G SUTTAPAK Software Engineering, School of Information Communication Technology, University of PHAYAO 1

จุดประสงค์การเรียนรู้  เข้าใจรูปแบบของแบบรูปการออกแบบทั้ง 5 ประเภท  ประยุกต์ใช้แบบรูปการออกแบบ Factory,Abstract Factory, Singleton, Builder, Prototype Pattern ได้ 2

CREATIONAL PATTERNS objects creation and hiding the creation logic no instantiating objects directly flexible deciding for a given use case 5 patterns 1.Factory 2.Abstract factory 3.Builder 4.Prototype 5.Singleton

FACTORY PATTERN most used in java create common interface create object pattern that inherited(is a) from common interface create instant object that inherited(has a) from create object pattern create new object via instant object(common) 4

FACTORY PATTERN 5

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Output Inside Circle::draw() method. Inside Rectangle::draw() method. Inside Square::draw() method. 9

FACTORY PATTERN 10

FACTORY PATTERN 11

ABSTRACT FACTORY PATTERN Factory of factories 12

ABSTRACT FACTORY PATTERN Factory Pattern  Shape  Circle  Rectangle  Square 13 Abstract Factory Pattern  Color  Red  Blue  Black  AbstractFactory  ColorFactory  ShapeFactory  FactoryProducer  bstractFactoryPatternDem o

ABSTRACT FACTORY PATTERN 14

ABSTRACT FACTORY PATTERN 15

ABSTRACT FACTORY PATTERN 16

ABSTRACT FACTORY PATTERN 17

ABSTRACT FACTORY PATTERN 18

ABSTRACT FACTORY PATTERN Output 19

SINGLETON PATTERN Simplest design patterns Create object only single object 20

SINGLETON PATTERN 21 Output Hello World

BUILDER PATTERN Build complex object using simple objects 22

BUILDER PATTERN implements 23

BUILDER PATTERN implements 24

BUILDER PATTERN implements 25

BUILDER PATTERN implements 26

BUILDER PATTERN implements 27

BUILDER PATTERN Output 28

PROTOTYPE PATTERN 29 creating duplicate object while keeping performance

PROTOTYPE PATTERN implements 30

PROTOTYPE PATTERN implements 31

PROTOTYPE PATTERN implements 32

PROTOTYPE PATTERN Output 33