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java factory method pattern

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Grotesque Gibbon answered on October 19, 2022 Popularity 10/10 Helpfulness 3/10

answer java factory method pattern

related Java Factory Object pattern

related explain factory method pattern briefly with example

java factory method pattern

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// Java Factory Method pattern
public abstract class Pizza {
	String name;
	String dough;
	String sauce;
	ArrayList<String> toppings = new ArrayList<String>();
	
	public String getName() {return name;}
 
	public void prepare() {System.out.println("Preparing " + name);}
	public void bake() {System.out.println("Baking " + name);}
	public void box() {System.out.println("Boxing " + name);}

	public String toString() {
		StringBuffer display = new StringBuffer();
		display.append("---- " + name + " ----\n");
		display.append(dough + "\n");
		display.append(sauce + "\n");
		for (String topping : toppings) {
			display.append(topping + "\n");
		}
		return display.toString();
	}
}

public class NYStyleCheesePizza extends Pizza {
	public NYStyleCheesePizza() { 
		name = "NY Style Sauce and Cheese Pizza";
		dough = "Thin Crust Dough";
		sauce = "Marinara Sauce";
		toppings.add("Grated Reggiano Cheese");
	}
}

public class NYStylePepperoniPizza extends Pizza {
	public NYStylePepperoniPizza() {
		name = "NY Style Pepperoni Pizza";
		dough = "Thin Crust Dough";
		sauce = "Marinara Sauce";
		toppings.add("Grated Reggiano Cheese");
		toppings.add("Sliced Pepperoni");
	}
}

public abstract class PizzaStore {
 
	abstract Pizza createPizza(String item);
 
	public Pizza orderPizza(String type) {
		Pizza pizza = createPizza(type);
		System.out.println("--- Making a " + pizza.getName() + " ---");
		pizza.prepare();
		pizza.bake();
		pizza.box();
		return pizza;
	}
}

public class NYPizzaStore extends PizzaStore {
	Pizza createPizza(String item) {
		if (item.equals("cheese")) {
			return new NYStyleCheesePizza();
		} else if (item.equals("pepperoni")) {
			return new NYStylePepperoniPizza();
		} else return null;
	}
}

public class ChicagoPizzaStore extends PizzaStore {
	Pizza createPizza(String item) {
        	if (item.equals("cheese")) {
            		return new ChicagoStyleCheesePizza();
        	} else if (item.equals("pepperoni")) {
            		return new ChicagoStylePepperoniPizza();
        	} else return null;
	}
}

public class PizzaTestDrive {
	public static void main(String[] args) {
		PizzaStore nyStore = new NYPizzaStore();
		PizzaStore chicagoStore = new ChicagoPizzaStore();
 
		Pizza pizza = nyStore.orderPizza("cheese");
		System.out.println("Ethan ordered a " + pizza.getName() + "\n");
 
		pizza = chicagoStore.orderPizza("cheese");
		System.out.println("Joel ordered a " + pizza.getName() + "\n");

		pizza = nyStore.orderPizza("pepperoni");
		System.out.println("Ethan ordered a " + pizza.getName() + "\n");
 
		pizza = chicagoStore.orderPizza("pepperoni");
		System.out.println("Joel ordered a " + pizza.getName() + "\n");
	}
}

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: factory-method java

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Contributed on Oct 19 2022

Grotesque Gibbon

0 Answers Avg Quality 2/10

Closely Related Answers

Java Factory Object pattern

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// Java Factory Object pattern
abstract public class Pizza {
	String name;
	String dough;
	String sauce;
	List<String> toppings = new ArrayList<String>();

	public String getName() {return name;}

	public void prepare() {System.out.println("Preparing " + name);}
	public void bake() {System.out.println("Baking " + name);}
	public void box() {System.out.println("Boxing " + name);}

	public String toString() {
		// code to display pizza name and ingredients
		StringBuffer display = new StringBuffer();
		display.append("---- " + name + " ----\n");
		display.append(dough + "\n");
		display.append(sauce + "\n");
		for (String topping : toppings) {
			display.append(topping + "\n");
		}
		return display.toString();
	}
}

public class PepperoniPizza extends Pizza {
	public PepperoniPizza() {
		name = "Pepperoni Pizza";
		dough = "Crust";
		sauce = "Marinara sauce";
		toppings.add("Sliced Pepperoni");
		toppings.add("Sliced Onion");
		toppings.add("Grated parmesan cheese");
	}
}

public class CheesePizza extends Pizza {
	public CheesePizza() {
		name = "Cheese Pizza";
		dough = "Regular Crust";
		sauce = "Marinara Pizza Sauce";
		toppings.add("Fresh Mozzarella");
		toppings.add("Parmesan");
	}
}

public class SimplePizzaFactory {

	public Pizza createPizza(String type) {
		Pizza pizza = null;

		if (type.equals("cheese")) {
			pizza = new CheesePizza();
		} else if (type.equals("pepperoni")) {
			pizza = new PepperoniPizza();
		} else if (type.equals("clam")) {
			pizza = new ClamPizza();
		} else if (type.equals("veggie")) {
			pizza = new VeggiePizza();
		}
		return pizza;
	}
}

public class PizzaStore {
	SimplePizzaFactory factory;
 
	public PizzaStore(SimplePizzaFactory factory) { 
		this.factory = factory;
	}
 
	public Pizza orderPizza(String type) {
		Pizza pizza;
 
		pizza = factory.createPizza(type);
 
		pizza.prepare();
		pizza.bake();
		pizza.box();

		return pizza;
	}
}

public class PizzaTestDrive {
	public static void main(String[] args) {
		SimplePizzaFactory factory = new SimplePizzaFactory();
		PizzaStore store = new PizzaStore(factory);

		Pizza pizza = store.orderPizza("cheese");
		System.out.println("We ordered a " + pizza.getName() + "\n");
		System.out.println(pizza);
 
		pizza = store.orderPizza("pepperoni");
		System.out.println("We ordered a " + pizza.getName() + "\n");
		System.out.println(pizza);
	}
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: factory

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Contributed on Oct 19 2022

Grotesque Gibbon

0 Answers Avg Quality 2/10

explain factory method pattern briefly with example

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// Pizza class hierarchy
abstract class Pizza {
    // Common pizza methods
}

class MargheritaPizza extends Pizza {
    // Margherita pizza specific methods
}

class PepperoniPizza extends Pizza {
    // Pepperoni pizza specific methods
}

// PizzaStore class
abstract class PizzaStore {
    public Pizza orderPizza() {
        Pizza pizza = createPizza(); // Factory method called
        // Additional pizza-related operations
        return pizza;
    }
    
    protected abstract Pizza createPizza(); // Factory method to be implemented by subclasses
}

// Concrete PizzaStore implementation
class MargheritaPizzaStore extends PizzaStore {
    protected Pizza createPizza() {
        return new MargheritaPizza();
    }
}

class PepperoniPizzaStore extends PizzaStore {
    protected Pizza createPizza() {
        return new PepperoniPizza();
    }
}

Popularity 9/10 Helpfulness 1/10 Language java

Source: chat.openai.com

Tags: explain

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Contributed on Jun 16 2023

Poised Pony

0 Answers Avg Quality 2/10

java factory method pattern

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java factory method pattern

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Java Factory Object pattern

explain factory method pattern briefly with example

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