public class Product {
    private String name;

    private String description;

    public Product() {
        setName("");
        setDescription("");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }
}

public abstract class AbstractProductBuilder {
    private Product product;

    public AbstractProductBuilder() {
        product = new Product();
        buildName();
        buildDescription();
    }

    public abstract void buildName();

    public abstract void buildDescription();

    public Product getProduct() {
        return product;
    }
}

public class SimpleProductBuilder extends AbstractProductBuilder {
    public SimpleProductBuilder() {
        super();
    }

    @Override
    public void buildName() {
        getProduct().setName("Apple");
    }

    @Override
    public void buildDescription() {
        getProduct().setDescription("Red apple");
    }
}