This presentation is part of the Design Pattern Series. Presentation explains the use of Factory Pattern comparing it against a real life situation and then showcasing the Java implementation of the same.

1. QmPe
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FACTORY PATTERN explained !
Prepared by Annamalai C
Copyright 2006-2011

2. Factory Pattern in Real Life
Kitchen in a Restaurant is similar to a Factory.
It is the Production House of the Restaurant.
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Customer places orders from a Menu, doesn’t really know how it gets prepared.
In return to the order, gets a fully cooked dish for eating.
Factory Pattern is a Creational Pattern.
It helps in Object Creation without exposing the details of Creation.
Copyright 2006-2011

3. Factory Pattern in Java
Copyright 2006-2011

4. Real Life vs Java Object
Factory
Kitchen
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5. Real Life vs Java Object
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6. How Factory Pattern works in Real Life ?
1 Orders a Dish from Menu
Receives the Name of the Dish
2 Creates the Dish
3 Delivers the Dish
Copyright 2006-2011

7. How Factory Pattern works in Java ?
public Food getFood(String name) {
if (name.equals("Dosa")) {
return new Dosa();
1 } else if (name.equals("Noodles")) {
return new Noodles();
}
return null;
}
KitchenFactory factory = new KitchenFactory();
Food dosa = factory.getFood("Dosa");
dosa.print();
2
Food noodles = factory.getFood("Noodles");
noodles.print();
Food
3
Dosa Noodles
Copyright 2006-2011

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QmPe
initiative
Copyright 2006-2011