Series

Design Pattern

This is a design pattern series. Where you can find important object oriented patterns that helps you to write better maintainable and clean code

Oct 13, 2026
Oct 13, 20262 min read2 views
Factory Method
In the Factory Design Pattern, a factory class takes input from the user and returns an object based on that input. This approach often requires numerous if, else if, and else statements; adding a new
2 min read2 views
Oct 12, 2026
Oct 12, 20262 min read6 views
The Factory
Suppose you want to add a payment feature to your e-commerce website. You have multiple payment gateways, such as bKash and Nagad. A user selects a payment gateway from the front end and submits the p
2 min read6 views