What are factory patterns in Java?

What are factory patterns in Java?

Factory patterns are design patterns that provide a way to create objects without specifying the exact class of the object that will be created.

Can you explain the different types of factory patterns?

Sure! The main types are the Simple Factory, Factory Method, and Abstract Factory patterns.

What is the difference between Factory Method and Abstract Factory?

The Factory Method defines an interface for creating an object, while the Abstract Factory provides an interface for creating families of related or dependent objects.

Can you give me a code example of a Factory Method?

Certainly! Here's a simple example:

interface Product {
    void use();
}

class ConcreteProductA implements Product {
    public void use() { System.out.println("Using Product A"); }
}

class ConcreteProductB implements Product {
    public void use() { System.out.println("Using Product B"); }
}

abstract class Creator {
    public abstract Product factoryMethod();
}

class ConcreteCreatorA extends Creator {
    public Product factoryMethod() { return new ConcreteProductA(); }
}

class ConcreteCreatorB extends Creator {
    public Product factoryMethod() { return new ConcreteProductB(); }
}

This code demonstrates how to create products using the Factory Method.