Factory Java, Java Summary Factory Design Pattern Programmer Sought

Lets say we want to build factory for computer parts.

Factory symbol. Next ill define my java factory class which in this case is a dogfactory class. So there are several types of computers like laptop desktop server. Programmatic example we have an interface car and two implementations ford and ferrari.

Table of contents 1. In java factory pattern is used to create instances of different classes of the same type. Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes.

Factory as the name suggests is a place to create some different products which are somehow similar in features yet divided into categories. Factory design pattern super class. Note that this pattern is also known as factory method design pattern.

Factory pattern is one of the most used design patterns in java. Factory pattern implementation 3. This type of design pattern is a creative model that provides the best way to create objects.

The java factory class. Super class in factory design pattern can be an interface abstract class or a normal java class. Factory method instead of whole separate class for factory just add one method in that class itself as a factory.

With that in mind were going to introduce one more family color as an interface with a few implementations white brown well skip the actual code for now but it can be found here. Calendargetinstance javas calendar abstract factory method factory of factory. Factory method pattern in java.

When to implement factory pattern. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. In factory mode we dont expose the creation logic to the client when creating the object and we point to the newly created object by using a common interface.

For our factory design pattern example we have abstract super class with overridden tostring method for testing purpose. As you can see from the code below the dogfactory class has a static getdog method that returns a dog that depends on the criteria that has been supplied. Factory pattern factory pattern is one of the most commonly used design patterns in java.

Factory is an object for creating other objects formally a factory is a function or method that returns objects of a varying prototype or class. The abstract factory deals with families of dependent objects. Full code example in java with detailed comments and explanation.