Design Pattern

Design Pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Design Pattern ,[object Object],[object Object],[object Object],[object Object]

Pattern di Creazione ,[object Object],[object Object],[object Object],[object Object]

Pattern Strutturali ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pattern Comportamentali ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pattern Comportamentali ,[object Object],[object Object]

Singleton ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],singleton.jpg

Factory ,[object Object],factory.jpg

Factory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],class PizzaFactory { public String [] pizzaType = {"Margherita","Marinara", "Capricciosa"}; public static Pizza createPizza(String pizzaType) { if (pizzaType.equals("Margherita")) return new PizzaMargherita(); else if (pizzaType.equals("Marinara")) return new PizzaMarinara(); else if (pizzaType.equals("Capricciosa")) return new PizzaCapricciosa(); else throw new IllegalArgumentException("La pizza " + pizzaType + " non esiste."); } } public class PizzaLover { public static void main (String avg[]) { System.out.println(PizzaFactory.createPizza("Margherita").getPrice()); } }

Adapter ,[object Object],[object Object],[object Object],[object Object]

Object Adapter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],adapter2.jpg

Class Adapter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],public class TestPegs { public static void main(String args[]) { SquarePeg squarePeg = new SquarePeg(); squarePeg.insert("Inserting square peg..."); RoundPeg roundPeg = new RoundPeg(); roundPeg.insertIntoHole("Inserting round peg..."); SquarePegInterface roundToSquare = new PegAdapter(new RoundPeg()); roundToSquare.insert("Inserting round peg..."); RoundPegInterface squareToRound = new PegAdapter(new SquarePeg()); squareToRound.insertIntoHole("Inserting square peg..."); } }

Flyweight ,[object Object],flyweight.jpg

Flyweight ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],class PizzaFactory { private static PizzaMargherita pizzaMargherita = new PizzaMargherita(); private static PizzaMarinara pizzaMarinara = new PizzaMarinara(); private static PizzaCapricciosa pizzaCapricciosa = new PizzaCapricciosa(); public Pizza createPizzaMargherita() { return pizzaMargherita; } public Pizza createPizzaMarinara() { return pizzaMarinara; } public Pizza createPizzaCapricciosa() { return pizzaCapricciosa; } } public class PizzaLover { public static void main (String avg[]) { PizzaFactory pizzaFactory = new PizzaFactory(); System.out.println((new PizzaFactory()).createPizzaMarinara().getPrice()); } }

Command ,[object Object],command.jpg

Command ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],class TurnOnLightCommand implements Command{ private Light theLight; public TurnOnLightCommand(Light light){ this.theLight=light; } public void execute(){ theLight.turnOn(); } } class TurnOffLightCommand implements Command{ private Light theLight; public TurnOffLightCommand(Light light){ this.theLight=light; } public void execute(){ theLight.turnOff(); } } public class TestCommand { public static void main(String[] args){ Light l=new Light(); Command switchUp=new TurnOnLightCommand(l); Command switchDown=new TurnOffLightCommand(l); Switch s=new Switch(switchUp,switchDown); s.flipUp(); s.flipDown(); } }

Strategy ,[object Object],strategy1.png

Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],class ContextManager { public static Strategy getStrategy(String context) { Strategy strategy = null; if (context.equals("A")) strategy = new ConcreteStrategyA(); else if (context.equals("B")) strategy = new ConcreteStrategyB(); else if (context.equals("C")) strategy = new ConcreteStrategyB(); return strategy; } } public class StrategyExample { public static void main(String[] args) { Strategy strategy = ContextManager.getStrategy("A"); } }

Template ,[object Object],template.png

Template ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],class Context { Template template; public Context(Template template) { this.template = template; } public void execute() { this.template.execute(); } } public class TemplateExample { public static void main(String[] args) { Context context; context = new Context(new ConcreteTemplateA()); context.execute(); context = new Context(new ConcreteTemplateB()); context.execute(); context = new Context(new ConcreteTemplateC()); context.execute(); } }

Design Pattern

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Design Pattern