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.

Princeton University
Skills you'll gain: Data Structures, Algorithms, Java, Performance Testing, Computer Programming, Java Programming, Theoretical Computer Science, Object Oriented Programming (OOP)
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Canva (Software), Graphic and Visual Design, Marketing Materials, Marketing Design, Brochures, Design Elements And Principles, Marketing Communications, Workflow Management, Presentations, Social Media Content, Strategic Communication, Financial Statements, Branding, Business Systems
Beginner · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Responsive Web Design, Usability, HTML and CSS, Web Design, Multimedia, Web Design and Development, Cascading Style Sheets (CSS), Bootstrap (Front-End Framework), Web Content Accessibility Guidelines, User Interface (UI), Email Marketing, Front-End Web Development, Adobe Creative Cloud, Web Development, Web Content, Web Development Tools, Hypertext Markup Language (HTML), Marketing, Content Management, File Management
Mixed · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Eclipse (Software), Java Programming, Object Oriented Programming (OOP), Java, Integrated Development Environments, Development Environment, Computer Programming, Debugging, Virtual Machines, Algorithms
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Vibrations, Engineering Analysis, Finite Element Methods, Mechanical Design, Structural Analysis, Mechanical Engineering, Simulations, Business Modeling, Technical Analysis, Technical Design
Intermediate · Course · 1 - 4 Weeks

University of the Arts London
Skills you'll gain: Social Justice, Design Thinking, Social Impact, Sustainable Design, Social Studies, Advocacy, Creative Thinking, Case Studies, Sustainable Development, Design, Systems Thinking, Sociology, Ideation, Empathy, Corporate Sustainability, Sustainability Standards, Problem Solving, Research, Prototyping, Collaboration
Beginner · Course · 1 - 4 Weeks

JetBrains
Skills you'll gain: Kotlin, Java, Java Programming, IntelliJ IDEA, Object Oriented Programming (OOP), Android Development, Interoperability, Mobile Development, Integrated Development Environments, Computer Programming, Performance Tuning, Functional Design, Code Review, Programming Principles, Maintainability, Unit Testing, Scripting, Software Development, Development Environment
Intermediate · Course · 1 - 3 Months

Northwestern University
Skills you'll gain: Influencing, Persuasive Communication, Design Thinking, Data-Driven Decision-Making, Leadership, Strategic Communication, Innovation, Collaboration, Crisis Management, Negotiation, Organizational Leadership, Ideation, Team Leadership, Resource Allocation, Human Centered Design, Teamwork, Motivational Skills, Corporate Communications, Marketing Strategies, Marketing
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Content Creation, Social Media Content, Search Engine Optimization, Digital Content, Social Media Marketing, Marketing Design, Web Analytics and SEO, Graphic Design, Content Strategy, Style Guides, Content Marketing, Content Management, Marketing Materials, Branding, Brand Management, Auditing, Sales Process, Report Writing
Beginner · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Organizational Change, Project Closure, Revenue Recognition, Agile Methodology, Waterfall Methodology, Organizational Structure, Organizational Leadership, Accrual Accounting, Project Planning, Organizational Strategy, Project Management Life Cycle, Business Ethics, Change Management, Cash Flows, Sprint Retrospectives, Accounting, Project Implementation, Financial Statements, Financial Accounting, Project Management
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Application Design, Secure Coding, JSON
Intermediate · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Apache Spark, User Interface (UI), Distributed Computing, Programming Principles, Big Data, Software Design, Data Structures, Software Design Patterns, Functional Design, Data Manipulation, Object Oriented Programming (OOP), Heat Maps, Data Visualization Software, Interactive Data Visualization, Computer Programming, Data Processing, Geospatial Information and Technology, Performance Tuning, Algorithms
Intermediate · Specialization · 3 - 6 Months