SOLID Principles: Introducing Software Architecture & Design (2025)

Master SOLID Principles to Write Clean, Well-Designed Object-Oriented Code

What you’ll learn
Understand each SOLID principle with clear, practical explanations
Identify design problems and code smells in real projects
Write clean, maintainable, and scalable object-oriented code
Apply SOLID principles in Java and other OOP languages
Improve software architecture and design decision-making
Build systems that are easy to extend, test, and refactor
Apply SOLID principles in real enterprise-level scenarios

Requirements
Beginner level knowledge in any object oriented programming language
Basic object oriented concepts like inheritance etc.

Description
Writing code that works is not enough—great software must also be clean, maintainable, scalable, and easy to evolve.This course introduces you to the SOLID Principles, the foundation of modern software architecture and object-oriented design used by professional developers worldwide.In this course, you’ll learn why bad design leads to fragile, tightly coupled systems and how applying SOLID principles helps you build flexible, testable, and future-proof applications. Each principle is explained step by step, starting from the problem, moving to the design flaw, and finally arriving at the correct, SOLID-compliant solution.The course focuses on real-world scenarios, not just theory. You’ll see how SOLID principles are applied in Object-Oriented languages like Java and how they naturally lead to clean architecture, better abstractions, and improved system design.SOLID Principles CoveredS — Single Responsibility Principle (SRP)O — Open/Closed Principle (OCP)L — Liskov Substitution Principle (LSP)I — Interface Segregation Principle (ISP)D — Dependency Inversion Principle (DIP)Each principle is explained using simple language, step-by-step examples, and before-and-after refactoring, so you clearly see the impact of good vs bad design.By the end of this course, you won’t just know SOLID principles—you’ll be able to apply them confidently in real-world projects, making your codebase robust, scalable, and future-proof.

Who this course is for
Programmers who want to write quality code
Developers who want to create well-designed software
Aspiring Software Architects