Design Patterns Demo (Java)

Bu repo, Java ile 22 adet Design Pattern'i pratik ederek ogrenmek icin hazirladigim bir calismadir. Amacim her pattern'i kucuk, okunabilir ve calisir bir ornekle anlamak; nerede kullanildigini ve trade-off'larini gormekti.

Proje Kapsami

Projede 3 ana kategori bulunuyor:

• Creational Patterns
• Structural Patterns
• Behavioral Patterns

Her pattern icin:

• Ayrı bir klasor/orn ek dosyasi
• Kisa aciklama (amac, ne zaman kullanilir, arti/eksi)
• main method ile calisir demo

Eklenen Pattern'ler (22)

Creational (5)

• Factory Method
• Abstract Factory
• Builder
• Singleton
• Prototype

Structural (7)

• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy

Behavioral (10)

• Chain of Responsibility
• Command
• Iterator
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

Projeyi Calistirma

1) Derleme

javac -d out $(find src -name '*.java')

2) Ornek Calistirma

Ornek olarak:

java -cp out patterns.creational.factorymethod.Demo
java -cp out patterns.structural.proxy.ProxyExample
java -cp out patterns.behavioral.visitor.VisitorExample

3) Tum Ornekleri Hızlı Kontrol

for main in \
patterns.creational.factorymethod.Demo \
patterns.creational.abstractfactory.AbstractFactoryExample \
patterns.creational.builder.BuilderExample \
patterns.creational.singleton.SingletonExample \
patterns.creational.prototype.PrototypeExample \
patterns.structural.adapter.AdapterExample \
patterns.structural.bridge.BridgeExample \
patterns.structural.composite.CompositeExample \
patterns.structural.decorator.DecoratorExample \
patterns.structural.facade.FacadeExample \
patterns.structural.flyweight.FlyweightExample \
patterns.structural.proxy.ProxyExample \
patterns.behavioral.chain.ChainOfResponsibilityExample \
patterns.behavioral.command.CommandExample \
patterns.behavioral.iterator.IteratorExample \
patterns.behavioral.mediator.MediatorExample \
patterns.behavioral.memento.MementoExample \
patterns.behavioral.observer.ObserverExample \
patterns.behavioral.state.StateExample \
patterns.behavioral.strategy.StrategyExample \
patterns.behavioral.templatemethod.TemplateMethodExample \
patterns.behavioral.visitor.VisitorExample; do
  java -cp out "$main"
done

Kisa Notlar

• Kodlarda bilerek kucuk ve basit ornekler kullandim.
• Tum pattern'ler tek bir “framework” gibi degil, ogrenme odakli bagimsiz mini ornekler olarak yazildi.

Sonuc

Bu calisma sayesinde pattern'leri ezberlemek yerine, hangi problemi cozdugunu ve neden o pattern'i sececegimi daha iyi anladim.