Factory pattern

Factory pattern

디자인 패턴의 한 종류로써 

원하는 형태의 클래스를 만드는데 있어서 

정규화시켜 좀더 쉽게 만드는 패턴.

mainClass

package main; public class mainClass { public static void main(String[] args) { /* Factory pattern : 원하는 형태의 클래스로 생산 */ Animal ani1 = animalFactory.Create("야옹이"); ani1.printDescript(); Cat cat = (Cat)ani1; cat.CatMethod(); Animal ani2 = animalFactory.Create("멍멍이"); ani2.printDescript(); Dog dog = (Dog)ani2; dog.DogMethod(); Animal ani3 = animalFactory.Create("황소"); ani3.printDescript(); Cow cow = (Cow)ani3; cow.CowMethod(); } }

Animal

package main; public interface Animal { public void printDescript(); }

Cat

;package main; public class Cat implements Animal { public void printDescript() { System.out.println("야옹이입니다."); } public void CatMethod() { System.out.println("야옹야옹"); } }

Dog

package main; public class Dog implements Animal { @Override public void printDescript() { System.out.println("멍멍이입니다."); } public void DogMethod() { System.out.println("멍멍"); } } ;

Cow

package main; public class Cow implements Animal { @Override public void printDescript() { System.out.println("황소입니다."); } public void CowMethod() { System.out.println("음 ~ 머"); } }

animalFactory

package main; public class animalFactory { public static Animal Create(String animalName) { if(animalName.equals("")) System.out.println("생성할 클래스가 없습니다."); if(animalName.equals("멍멍이")) return new Dog(); else if(animalName.equals("야옹이")) return new Cat(); else if(animalName.equals("황소")) return new Cow(); return null; } }