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.

LearnKartS
Skills you'll gain: Google Analytics, Email Marketing, Google Ads, WordPress, LinkedIn, Content Creation, Content Marketing, Facebook, Social Media, Social Media Marketing, Search Engine Marketing, Social Media Content, Web Analytics and SEO, Advertising Campaigns, Email Automation, Social Media Campaigns, Analytics, Keyword Research, ChatGPT, Bidding
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Prompt Engineering, Generative AI Agents, Tool Calling, Agentic systems, User Interface and User Experience (UI/UX) Design, Human Computer Interaction, OpenAI, Artificial Intelligence
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: JSON, NoSQL, Cloud API, Javascript, Data Store, Data Import/Export, Cloud Computing, Software Development
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Oracle SQL Developer, Oracle Databases
Intermediate · Specialization · 1 - 3 Months

École normale supérieure
Skills you'll gain: Theoretical Computer Science, Combinatorics, Algorithms, Graph Theory, Computational Thinking, Mathematical Modeling, Probability
Mixed · Course · 1 - 3 Months

Queen Mary University of London
Skills you'll gain: Proposal Development, Market Research, Data Collection, Research Design, Research Methodologies, Business Research, Surveys, Research, Market Analysis, Qualitative Research, Data Analysis, Business Reporting, Business Ethics
Beginner · Course · 1 - 4 Weeks

Meta
Skills you'll gain: React Native, Mobile Development, GitHub, User Interface and User Experience (UI/UX) Design, Version Control, Wireframing, UI Components, User Flows, Data Store, JSON, Development Environment, SQL
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Supply Chain, Logistics, Supply Chain Management, Logistics Management, Supply Chain Planning, Performance Measurement, Transportation Management, Operational Efficiency, Operations Management, Business Operations, Transportation Operations, Supply Chain Systems, E-Commerce, Systems Thinking, Business Planning, Market Analysis, Process Design, Supplier Management, Business, Business Administration
Beginner · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Embedded Software, Embedded Systems, Debugging, Model Based Systems Engineering, Computer Engineering, Failure Analysis, Simulation and Simulation Software, Technical Communication, Electronics Engineering, Automation Engineering
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Deployment, CI/CD, Full-Stack Web Development, MongoDB, Application Design, Node.JS, React.js, DevOps, NoSQL, Database Management, Kubernetes, Front-End Web Development, Software Architecture, Application Development, Authorization (Computing), Back-End Web Development, Restful API, Application Programming Interface (API), GitHub, Javascript
Advanced · Course · 1 - 3 Months

Skills you'll gain: IntelliJ IDEA, Object Oriented Design, Debugging, Software Design, User Interface (UI), Integrated Development Environments, Java, Design Thinking, Program Development, Data Validation, Software Development, Application Development
Beginner · Course · 1 - 4 Weeks

Institut Mines-Télécom
Skills you'll gain: Growth Strategies, Key Performance Indicators (KPIs), Digital Transformation, Business Analysis, Competitive Analysis, Action Oriented, Analysis, Business Transformation, Business Development, Market Analysis, Business Strategy, Business Valuation, Entrepreneurship, Technology Strategies, Business Technologies, E-Commerce, Emerging Technologies, Innovation, Business Modeling, Regulation and Legal Compliance
Beginner · Specialization · 3 - 6 Months