Learn with Tiemoon

Professional OOP Training Program

“Objects are like people. They’re living, breathing things that have knowledge inside them about how to do things and have memory inside them so they can remember things.” ~ Steve Jobs

This training program is designed to equip aspiring software developers with a solid foundation in Object-Oriented Programming (OOP), OOAD — a critical skill for building reusable and maintainable software.

Since 2008, this flagship training program by Zohirul Alam Tiemoon has empowered over 10,000 professionals — many of whom are now making a significant impact in both local and global software development. Join the legacy and level up your coding career!

🔧 Focus on Principles

This course will also focus on the SOLID and other OOP principles. These principles guide developers in creating flexible, reusable, and maintainable code, which is crucial for tackling real-world challenges in software engineering and advancing your career as a professional developer.

🛠️ Code Quality Enhancement

At the end of this course, we will identify common code smells—a sign of deeper problems in the code—and learn effective refactoring techniques to resolve these issues. Through practical examples, participants will discover how to enhance code quality, ensuring maintainability, and reducing technical debt.

Join the 8th batch of this exclusive training program! Don’t miss out on this opportunity to enhance your skills and grow professionally.

🌟 Enroll Now! Limited Spots Available! 🌟

• No of Seats: 15. Register Today: Register here
• Deadline: Wednesday, Sept 17, 2025
• Program Starts: Friday, Sept 19, 2025
• Registration Fee: 5,000 BDT
• Class Schedule: Friday, Saturday (6:00 PM to 10:00 PM)
• Mode: 6 Live online sessions via Google Meet
• Session recordings and resources will be provided
• Prerequisite: Basic knowledge of any programming language

What you will learn

"Good software systems begin with clean code. On the one hand, if the bricks aren't well made, the architecture of the building doesn't matter much. On the other hand, you can make a substantial mess with well-made bricks. This is where the SOLID principles come in." ~ Robert C. Martin

• Core OOP Concepts: encapsulation, inheritance, polymorphism, and abstraction
• Reusable & Maintainable Code using classes and objects
• Class Design and relationships
• Applying SOLID Principles
• Code Quality Improvement via best practices
• Code Smells & Refactoring techniques
• Hands-On Experience with C++, C#, and Java

Course Outline

Quick overview on C#/Java/Python/PHP

• Language basics
• Data types, Loops, Conditional statements, Methods
• Collections: Array, List, ArrayList, Dictionary

Understanding OOP

• What and Why of OOP
• Class & Object, Fields, Properties, Methods
• Constructors, Overloading, Reference Types
• Delegation, Association, Inheritance, Overriding
• Constructor chaining, Runtime & Static Polymorphism, Generics
• Interfaces

OOP Principles - SOLID & More

• Introduction to SOLID Principles
• Single Responsibility Principle (SRP)
• Open/Closed Principle (OCP)
• Liskov Substitution Principle (LSP)
• Interface Segregation Principle (ISP)
• Dependency Inversion Principle (DIP)
• Tell Don’t Ask
• DRY (Don’t Repeat Yourself)
• The Law of Demeter
• YAGNI (You aren’t Gonna Need It)
• Good practices for quality code

Code Smells

• Long Method
• Large Class
• Primitive Obsession
• Long Parameter List
• Data Clumps
• Refused Bequest
• Switch Statements
• Temporary Field
• Comments
• Duplicate Code
• Dead Code
• Lazy Class
• Speculative Generality
• Feature Envy
• Inappropriate Name
• Middle Man

Refactoring Techniques

• Extract/Inline Method
• Extract Variable / Inline Temp
• Replace Temp with Query
• Replace Method with Method Object
• Substitute Algorithm
• Move Method/Field
• Extract/Inline Class
• Remove Middle Man
• Encapsulate Field/Collection
• Replace Type Code techniques
• Replace Subclass with Fields
• Replace Conditional with Polymorphism
• Introduce Null Object/Assertion
• Add/Remove Parameter
• Rename Method
• Introduce Parameter Object
• Preserve Whole Object
• Replace Constructor with Factory Method
• Replace Error Code with Exception
• Replace Exception with Test
• Pull Up/Push Down (Field, Method, Constructor)
• Extract Subclass/Superclass/Interface
• Collapse Hierarchy
• Replace Inheritance with Delegation and vice versa

“simplicity is the ultimate sophistication.” ~ Leonardo da Vinci

💳 Payment Methods

Please fill up your information here: Register here and make your payment using one of the following methods:

• bKash (Send Money): 01711281825
• Bank Transfer:
  • Name: Zohirul Alam Tiemoon
  • Saving Account: 0443201000014597
  • Karwan Bazar Branch
  • Routing Number: 245262537
  • United Commercial Bank (UCB) Limited

Once you've made the payment, kindly send a screenshot or the transaction details to WhatsApp: 01711281825 .

👨‍🏫 Program Coach

Zohirul Alam Tiemoon