Object Oriented Design courses can help you learn principles like encapsulation, inheritance, and polymorphism, along with design patterns such as Singleton and Factory. You can build skills in creating reusable code, improving software maintainability, and designing systems that are easier to understand and extend. Many courses introduce tools like UML for modeling, as well as programming languages such as Java and Python, which are commonly used to implement object-oriented concepts in real-world applications.

Coursera
Skills you'll gain: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months
University of Michigan
Skills you'll gain: Web Scraping, Restful API, Web Services, JSON, Extensible Markup Language (XML), Network Protocols, Application Programming Interface (API), Data Processing, Hypertext Markup Language (HTML), Python Programming, Data Manipulation, Software Installation
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Database Design, Relational Databases, Data Modeling, Database Management Systems, Database Management, Oracle Databases, SQL, Data Integrity, PostgreSQL, Conceptual Design
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Computational Thinking, Algorithms, Graph Theory, Data Structures, C++ (Programming Language), C and C++, Programming Principles, Computer Programming, Object Oriented Programming (OOP), Technical Design, Theoretical Computer Science
Intermediate · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: ASP.NET, .NET Framework, C# (Programming Language), Object Oriented Programming (OOP), Web Development, Web Applications, Object Oriented Design, Programming Principles, Development Environment, Debugging
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Development, Cloud Computing Architecture, Cloud Applications, Cloud Management, Cloud Computing, Network Planning And Design, Software Architecture, Cloud Infrastructure, Network Performance Management, Data Management, DevOps, Data Storage, Performance Tuning, Maintainability, CI/CD, Data Centers, Resource Utilization, Capacity Management, Design Software, Generative AI
Beginner · Course · 3 - 6 Months

Skills you'll gain: Software Development Life Cycle, User Story, Software Architecture, Agile Software Development, Sprint Retrospectives, Agile Methodology, DevOps, Kanban Principles, Software Design, Scrum (Software Development), Information Technology, Computer Hardware, Sprint Planning, Software Development Methodologies, Backlogs, Agile Project Management, Team Building, Risk Management, Leadership, Communication
Beginner · Professional Certificate · 3 - 6 Months

LearnKartS
Skills you'll gain: JUnit, File I/O, Java Programming, Object Oriented Programming (OOP), Java, Unit Testing, Program Development, Maintainability, Software Development, Secure Coding, Software Testing, Programming Principles, Computer Programming, Test Case, Application Development, Authentications, Application Security, Application Design, Software Design Patterns, Debugging
Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Prompt Engineering, Event Marketing, Presentations, Video Editing, Canva (Software), Marketing Materials, Color Theory, Typography, Storytelling, Marketing Collateral, Marketing Design, Interactive Design, Brand Strategy, Social Media, Logo Design, Layout Design, Social Media Content, Social Media Campaigns, Branding, Content Creation
Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: C and C++, C++ (Programming Language), Object Oriented Programming (OOP), File I/O, Computer Programming, Microsoft Visual Studio, System Programming, Apple Xcode, Development Environment, Algorithms, File Systems, Software Design Patterns, Data Structures, Performance Tuning, Debugging, File Management
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: HTML and CSS, Bootstrap (Front-End Framework), Responsive Web Design, Front-End Web Development, User Interface (UI), JavaScript Frameworks, Web Design and Development, Web Applications, Web Development Tools, React.js, General Networking
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: HTML and CSS, Ajax, Javascript, Responsive Web Design, Front-End Web Development, Web Design, Web Applications, Cascading Style Sheets (CSS), Development Environment, Web Development Tools, Web Content Accessibility Guidelines
Mixed · Course · 1 - 4 Weeks