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.

American Council on Exercise
Skills you'll gain: Health And Wellness Coaching, Mindfulness, Chronic Diseases, Stress Management, Nutrition Education, Social Determinants Of Health, Patient-centered Care, Coaching, Cognitive Behavioral Therapy, Motivational Interviewing, Health Promotion, Mental and Behavioral Health, Nutrition and Diet, Exercise Science, Ethical Standards And Conduct, Behavior-Driven Development, Client Support, Goal Setting, Smart Goals, Diversity and Inclusion
Beginner · Professional Certificate · 3 - 6 Months

Dartmouth College
Skills you'll gain: Structural Analysis, Structural Engineering, Civil Engineering, Engineering, Engineering Calculations, Construction, Mechanics, Engineering Design Process, Experimentation
Beginner · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Javascript, jQuery, Event-Driven Programming, Object Oriented Programming (OOP), JSON, Web Applications, Computer Programming, Web Development Tools, Debugging, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS)
Beginner · Course · 1 - 3 Months

Alberta Machine Intelligence Institute
Skills you'll gain: Prompt Engineering, Generative AI, Generative Model Architectures, Generative Adversarial Networks (GANs), Retrieval-Augmented Generation, Generative AI Agents, LangChain, Large Language Modeling, Vision Transformer (ViT), ChatGPT, Artificial Intelligence and Machine Learning (AI/ML), Image Analysis, Model Deployment, OpenAI API, Google Cloud Platform, Open Source Technology, Embeddings, Machine Learning, Python Programming, Probability & Statistics
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Hardware Troubleshooting, Computer Networking, Network Protocols, Web Applications, Computer Security Awareness Training, Network Routers, Wireless Networks, Technical Support and Services, Encryption, Security Awareness, Computer Literacy, System Configuration, Microsoft Office, Authentications, Microsoft Windows, Peripheral Devices, Patch Management, Technical Support, Mac OS, Database Management
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Disaster Recovery, Business Continuity Planning, Database Management, Database Administration, Problem Management, Relational Databases, Incident Management, Service Management, Information Systems, Software Development Methodologies, IT Management, Asset Management, Project Design, Object Oriented Design, Agile Methodology
Intermediate · Course · 1 - 4 Weeks

Meta
Skills you'll gain: Git (Version Control System), Android Jetpack, Android Development, Android Studio, User Interface and User Experience (UI/UX) Design, Mobile Development, User Interface (UI), Kotlin, Wireframing, User Flows
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Ajax, Object Oriented Programming (OOP), Javascript, JSON, Application Programming Interface (API), Scripting, Software Design Patterns, Data Management, Data Structures, Event-Driven Programming, Data Validation, Prototyping, Computational Logic, Maintainability, Programming Principles, Web Development, Software Development, Debugging, Software Engineering, Performance Tuning
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Adobe Illustrator, Generative AI, AI Workflows, Creativity, Adobe Creative Cloud, Graphic Design, Computer Graphics, Creative Design, Creative Thinking, Color Theory, Digital Design, Visual Design, Content Creation, Branding
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Web Services, Restful API, Apache Maven, Spring Boot, Spring Framework, Gradle, Simple Object Access Protocol (SOAP), Java Platform Enterprise Edition (J2EE), Java, API Design, Application Frameworks, Secure Coding, Object-Relational Mapping, Data Persistence, JSON, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

Logical Operations
Skills you'll gain: Data Structures, Data Processing, Application Development, Programming Principles, Computer Programming, Object Oriented Programming (OOP), Python Programming, Virtual Machines, Software Development
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Spring Framework, Spring Boot, Java, Apache Maven, Hibernate (Java), Unit Testing, Gradle, Microservices, Application Programming Interface (API), Google Cloud Platform, Simple Object Access Protocol (SOAP), Application Deployment, Development Environment, Cloud Deployment, OAuth, YAML, Restful API, Load Balancing, Configuration Management
Intermediate · Specialization · 3 - 6 Months