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.

Simplilearn
Skills you'll gain: Lean Manufacturing, Lean Six Sigma, Process Mapping, Statistical Process Controls, Six Sigma Methodology, Failure Mode And Effects Analysis, Process Flow Diagrams, Process Analysis, Kaizen Methodology, Process Optimization, Quality Improvement, Operational Efficiency, Process Improvement, Performance Measurement, Manufacturing Operations, Business Process, Quality Management, Process Improvement and Optimization, Statistical Analysis, Kanban Principles
★ 4.4 (44) · Beginner · Specialization · 1 - 3 Months

Arizona State University
Skills you'll gain: Curiosity, Lean Methodologies, Design Thinking, Entrepreneurship, Commercialization, Innovation, Persona Development, Problem Solving, Sales Presentations, Customer Analysis, Presentations, Target Audience, Creative Problem-Solving, Customer Insights, Market Opportunities, Technology Solutions, Team Oriented, Market Research, Solution Design, Technology Strategies
★ 4.8 (82) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Programming (OOP), Code Reusability, Program Development, Python Programming, Computer Programming, Programming Principles, Solution Design, Data Structures
★ 4.7 (53) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Structures, Algorithms, Graph Theory, Programming Principles, Theoretical Computer Science, Computer Science, Computer Programming, Python Programming, Pandas (Python Package), Machine Learning Algorithms, Computational Thinking, C++ (Programming Language), Data Architecture, Random Forest Algorithm, Performance Tuning, Object Oriented Programming (OOP), Network Analysis, Program Development, Problem Solving, Debugging
★ 4.5 (40) · Intermediate · Specialization · 3 - 6 Months

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

SkillsBooster Academy
Skills you'll gain: Prompt Engineering, Business Writing, AI Security, Email Automation, Artificial Intelligence, Marketing Communications, AI Workflows, Copywriting, Strategic Thinking, AI Personalization, Business Communication, Marketing Automation, Content Strategy, Business Risk Management, Ethical Standards And Conduct, Engineering Documentation, Research Reports, Data-Driven Decision-Making, Information Privacy, Security Awareness
★ 4.1 (34) · Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Performance Tuning, Memory Management, System Programming, Hardware Architecture, Program Development, Computer Architecture, Performance Testing, Computer Hardware, Algorithms
★ 2.9 (68) · Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Object Oriented Programming (OOP), Web Scraping, Object Oriented Design, Data Structures, Web Development Tools, Test Driven Development (TDD), Computer Programming, Python Programming, Scripting Languages, User Interface (UI), Open Source Technology, Programming Principles, Database Management, Database Application, Code Reusability, UI Components, File I/O, Frontend Integration
★ 4.8 (8) · Intermediate · Course · 1 - 3 Months

Meta
Skills you'll gain: Restful API, SQL, React Native, Database Management, Databases, Application Programming Interface (API), API Design, Relational Databases, Data Persistence, Mobile Development, Data Storage Technologies, Data Management, Application Development, Authentications
★ 4.7 (69) · Intermediate · Course · 1 - 3 Months

28DIGITAL
Skills you'll gain: File I/O, Data Structures, Theoretical Computer Science, Algorithms, Memory Management, Graph Theory, Data Access, Performance Tuning
★ 4.6 (60) · Advanced · Course · 1 - 3 Months

Skills you'll gain: Collaboration, Educational Materials, Instructional Design, Laboratory Experience, Constructive Feedback, Learning Strategies, Experimentation, Science and Research, Physics, Scientific Methods, Investigation
★ 4.8 (57) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Web Design, Web Content, Web Design and Development, Web Development, Web Development Tools
★ 4.7 (331) · Beginner · Guided Project · Less Than 2 Hours