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.

National Taiwan University
Skills you'll gain: Autodesk Revit, Building Information Modeling, Civil Engineering, Construction, Autodesk, Engineering Management, Construction Engineering, Architecture and Construction, Computer-Aided Design, Construction Management, Building Design, 3D Modeling, Information Management
★ 4.7 (92) · Mixed · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Object Oriented Design, File I/O, Application Development, Data Access, Systems Development, Computer Programming, User Interface (UI), Application Design, UI Components, Program Development, Programming Principles, Database Application, Database Management, Databases, System Design and Implementation, Event-Driven Programming, Integrated Development Environments
★ 4.9 (20) · Beginner · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: NoSQL, Database Systems, MongoDB, Database Management Systems, Databases, Database Design, Relational Databases, Query Languages, Apache Cassandra, Data Storage Technologies, Scalability, Graph Theory, Unstructured Data, Maintainability
★ 4.3 (170) · Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: TypeScript, Event-Driven Programming, Javascript, JavaScript Frameworks, Pseudocode, Computational Thinking, JSON, Program Development, Web Development, Angular, Web Applications, Vue.JS, Data Import/Export, Application Development, Mobile Development, Debugging, Code Reusability, React.js, Server Side, Web Development Tools
★ 4.6 (110) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: AI Security, AI Integrations, Agentic Workflows, Responsible AI, Authorization (Computing), JSON, Agentic systems, Context Management, Requirements Elicitation
★ 4.7 (30) · Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Manufacturing Processes, Augmented Reality, Materials science, Industrial Design, Industrial Engineering, Production Process, Process Analysis
★ 4.8 (21) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Test Automation, Performance Testing, Software Quality Assurance, White-Box Testing, API Testing, Test Script Development, AI Security, Software Quality (SQA/SQC), Performance Stress Testing, Software Development Methodologies, Regression Testing, AI Integrations, Maintainability, Code Review, Scalability, Automation, Code Coverage, Software Technical Review, DevOps, Security Testing
★ 4.3 (32) · Beginner · Specialization · 3 - 6 Months

Universidad de los Andes
Skills you'll gain: Scrum (Software Development), Value Propositions, Proposal Development, Sprint Retrospectives, Business Modeling, Video Game Development, Customer Analysis, Agile Methodology, Software Development Methodologies, Agile Software Development, Presentations, Entrepreneurship, Game Design, Target Audience, Sprint Planning, Target Market, Backlogs, Agile Product Development, Agile Project Management, Market Opportunities
★ 4.5 (53) · Beginner · Course · 1 - 3 Months

Peking University
Skills you'll gain: Research Methodologies, Research Design, Scientific Methods, Research, Surveys, Science and Research, Social Sciences, Experimentation, Data Collection, Research Reports, Sample Size Determination, Survey Creation, Economics, Policy, and Social Studies, Ethical Standards And Conduct, Probability & Statistics
★ 4.7 (52) · Mixed · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Meeting Facilitation, Collaboration, Organizational Skills, Cooperation, Discussion Facilitation, Team Building, Drive Engagement, Teamwork, Innovation, Conflict Management, Knowledge Transfer, Decision Making
★ 4.5 (565) · Beginner · Course · 1 - 4 Weeks

Codio
Skills you'll gain: Algorithms, Data Structures, Java, Java Programming, Other Programming Languages
★ 3.4 (9) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Building Codes, Construction, Safety Assurance, Safety Standards, Building Services Engineering, Building Design, Facility Management and Maintenance, Hazard Analysis, Design Specifications, Systems Integration
★ 4.6 (75) · Intermediate · Course · 1 - 4 Weeks