[DesignPattern - Factory Method] sample1

Design Pattern - Factory Method

1. 클래스다이어그램

2. Source

• Product.java
  

  package com.dazzilove.factorymethod.sample1.framework;
  
  public abstract class Product {
      public abstract void use();
  }
  

• Factory

  package com.dazzilove.factorymethod.sample1.framework;
  
  public abstract class Factory {
      public final Product create(String owner) {
          Product p = createProduct(owner);
          registerProduct(p);
          return p;
      }
      
      protected abstract Product createProduct(String owner);
      
      protected abstract void registerProduct(Product product);
  }
  

• IdCard.java

  package com.dazzilove.factorymethod.sample1.idcard;
  
  import com.dazzilove.factorymethod.sample1.framework.Product;
  
  public class IdCard extends Product {
      
      private String owner;
      
      public IdCard(String owner) {
          System.out.println(owner + "의 카드를 만듭니다.");
          this.owner = owner;
      }
  
      @Override
      public void use() {
          System.out.println(owner + "의 카드를 사용합니다.");
      }
      
      public String getOwner() {
          return this.owner;
      }
  }
  

• IdCardFactory.java

  package com.dazzilove.factorymethod.sample1.idcard;
  
  import java.util.Vector;
  
  import com.dazzilove.factorymethod.sample1.framework.Factory;
  import com.dazzilove.factorymethod.sample1.framework.Product;
  
  public class IdCardFactory extends Factory {
      
      private Vector owners = new Vector();
  
      @Override
      protected Product createProduct(String owner) {
          return new IdCard(owner);
      }
  
      @Override
      protected void registerProduct(Product product) {
          owners.add(((IdCard)product).getOwner());
      }
      
      public Vector getOwners() {
          return owners;
      }
  }
  

• Main.java

  package com.dazzilove.factorymethod.sample1.idcard;
  
  import com.dazzilove.factorymethod.sample1.framework.Factory;
  import com.dazzilove.factorymethod.sample1.framework.Product;
  
  public class Main {
      public static void main(String[] args) {
          Factory factory = new IdCardFactory();
          Product idCard1 = factory.create("홍길동");
          Product idCard2 = factory.create("이순신");
          Product idCard3 = factory.create("강감찬");
          idCard1.use();
          idCard2.use();
          idCard3.use();
      }
  }
  

3. 결과출력