import java.util.*;

public class Product {
  ArrayList parts = new ArrayList();

  public void addPart(String part) {
    parts.add(part);
  }

  public void show() {
    Iterator iterator = parts.iterator();
    while (iterator.hasNext()) {
      System.out.println(iterator.next());
    }
  }
}

abstract class Builder {
  abstract public void buildPartA();
  abstract public void buildPartB();
  abstract public Product getResult();
}

public class ConcreteBuilder1 extends Builder {
  Product product;

  public void buildPartA() {
    product = new Product();
    product.addPart("partA");
  }

  public void buildPartB() {
    product.addPart("partB");
  }

  public Product getResult() {
    return product;
  }
}

public class ConcreteBuilder2 extends Builder {
  Product product;

  public void buildPartA() {
    product = new Product();
    product.addPart("partH");
  }

  public void buildPartB() {
    product.addPart("partI");
  }

  public Product getResult() {
    return product;
  }
}

public class Director {
  public void constract(Builder builder) {
    builder.buildPartA();
    builder.buildPartB();
  }
}

public class Client {
  public static void main(String[] args) {
    Director director = new Director();

    Builder b1 = new ConcreteBuilder1();
    Builder b2 = new ConcreteBuilder2();

    director.constract(b1);
    Product p1 = b1.getResult();
    p1.show();

    director.constract(b2);
    Product p2 = b2.getResult();
    p2.show();
  }
}

C:\JavaHello\Builder>java Client
partA
partB
partH
partI

C:\JavaHello\Factory Method>