Portfolio


interface Product {
}

abstract class Factory {
    protected abstract Product factoryMethod();
}

class ConcreteProduct implements Product {
}

class ConcreteFactory extends Factory {
    protected Product factoryMethod() {
        return new ConcreteProduct();
    }
}

public class Client {
    public static void main(String[] args) {
        Factory creator = new ConcreteFactory();
        Product product = creator.factoryMethod();
        System.out.println(product.getClass().getSimpleName());
    }
}


ConcreteProduct

Process finished with exit code 0


public Document CreateDocument(String type){
	if (type.isEqual("html"))
		return new HtmlDocument();
	if (type.isEqual("proprietary"))
		return new MyDocument();
	if (type.isEqual("pdf"))
		return new PdfDocument ();
}

before - 냄세나는 if 문이 덕지덕지 나열되어 있다.


public void NewDocument(String type){
	Document doc=CreateDocument(type);
	docs.add(doc);
}

After -

Factory Method Pattern

Motivation

Intent

Implementation

Applicablity

Examples

Specific problems & Implementation

Pros and Cons