Mastering Object-Oriented Programming Course
This course guides you through building a comprehensive FreelanceManager application using object-oriented programming principles, covering everything from class design to advanced refactoring and testing for production-ready software.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Mastering Object-Oriented Programming Course teaches you to design clean, extensible systems through a realistic FreelanceManager app. You will model clients, projects, billing, invoices, and time tracking using classes, inheritance, interfaces, and polymorphism, then apply SOLID, testing strategies, error handling, and refactoring patterns to deliver maintainable, well-documented, production-ready code.
Elevify advantages
Develop skills
- Design robust OOP models: craft clean classes, interfaces, and project hierarchies.
- Implement polymorphic billing: build invoices, taxes, and discounts that scale fast.
- Apply SOLID and testing: refactor OOP code with unit tests for reliable releases.
- Model real clients and projects: enforce validation, IDs, and lifecycle workflows.
- Build a CLI FreelanceManager: in-memory data, CRUD, and reports in one short project.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...

Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos help a lot with learning.

André FelipePrompt Engineering Student
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