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.

EDUCBA
Skills you'll gain: Technical Drawing, Engineering Drawings, Mechanical Drawings, Computer Aided Three-Dimensional Interactive Application (CATIA), Assembly Drawing, 3D Modeling, Mechanical Design, Drafting and Engineering Design, Computer-Aided Design, Visualization (Computer Graphics), Design Software, File Management, Engineering Design Process, Interoperability, User Interface (UI)
★ 4.7 (292) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Training and Development, Adult Learning Principles, Succession Planning, Performance Improvement, Quality Improvement, Employee Retention, Workforce Development, Organizational Development, Employee Training, Human Resources, Process Improvement, Training Programs, Quality Management, Human Resources Management and Planning, Management Training And Development, Human Resource Strategy, Job Analysis, People Development, Law, Regulation, and Compliance, Needs Assessment
Intermediate · Course · 1 - 4 Weeks

British Standards Institution
Skills you'll gain: Model Evaluation, Vulnerability Assessments, Performance Testing, Risking, Verification And Validation, Artificial Neural Networks, Statistical Methods, Deep Learning, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Test Data, Regression Analysis
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Java Programming, Java, Software Development Tools, Application Servers, Web Applications, Development Environment, Java Platform Enterprise Edition (J2EE), Object Oriented Programming (OOP), Application Development, Eclipse (Software), Program Development, Computer Programming, Object Oriented Design, Mobile Development, Programming Principles, Integrated Development Environments, UI Components, Event-Driven Programming, User Interface (UI), Virtual Machines
★ 4.4 (207) · Intermediate · Specialization · 3 - 6 Months

SkillsBooster Academy
Skills you'll gain: Claude Code, Anthropic Claude, Vibe coding, Figma (Design Software), AI Workflows, AI Orchestration, Prompt Engineering, Software Development Tools, AI Integrations, Marketing Automation, Organizational Skills, Business Writing, Design, Generative AI, AI Security, User Interface and User Experience (UI/UX) Design, Code Review, Artificial Intelligence, Web Design, Strategic Thinking
★ 4.3 (62) · Beginner · Specialization · 3 - 6 Months

British Standards Institution
Skills you'll gain: Risking, Statistical Methods, Data Ethics, Model Evaluation, Vulnerability Assessments, Statistical Hypothesis Testing, Performance Testing, Statistical Analysis, Decision Intelligence, Verification And Validation, Artificial Intelligence, Artificial Neural Networks, Supervised Learning, Ethical Standards And Conduct, Continuous Monitoring, Deep Learning, Artificial Intelligence and Machine Learning (AI/ML), Performance Analysis, Law, Regulation, and Compliance, Probability & Statistics
Intermediate · Specialization · 3 - 6 Months

Pearson
Skills you'll gain: Human Resources, Human Resources Management and Planning, Human Resource Management, Human Resource Strategy, Performance Appraisal, Employee Training, Human Resource Policies, Management Training And Development, Workforce Development, Recruitment, Diversity and Inclusion, People Management, Talent Recruitment, Training Programs, Staff Management, Learning Styles, Diversity Awareness, Full Cycle Recruitment, Performance Review, Employee Performance Management
Beginner · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: AI Personalization, Model Evaluation, Machine Learning Algorithms, Machine Learning Methods, Taxonomy, Decision Support Systems, Business Metrics, Applied Machine Learning, Test Data, Machine Learning, Dimensionality Reduction, Performance Metric, Performance Testing, Spreadsheet Software, Analysis, Systems Design, Solution Design, Predictive Modeling, Microsoft Excel, Statistical Methods
★ 4.3 (834) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: React Redux, React.js, React Native, Jest (JavaScript Testing Framework), GraphQL, Application Deployment, Application Development, Web Applications, Full-Stack Web Development, Web Development Tools, UI Components, JavaScript Frameworks, Front-End Web Development, Web Frameworks, Web Development, HTML and CSS, Cascading Style Sheets (CSS), User Interface (UI), Event-Driven Programming, Javascript
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Back-End Web Development, Relational Databases, Database Management Systems, Database Management, Database Theory, SQL, Database Design, Databases, Database Administration, MySQL, Data Store, NoSQL, Query Languages, Data Integrity
★ 4.6 (692) · Beginner · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Empathy & Emotional Intelligence, Emotional Intelligence, Social Skills, Active Listening, Empathy, Professional Development, Stress Management, Relationship Building, Interpersonal Communications, Self-Awareness, Communication Strategies, Self-Discipline, Personal Development, Journals
★ 4.7 (1.7K) · Beginner · Course · 1 - 4 Weeks
Madecraft
Skills you'll gain: Creative Thinking, Innovation, Brainstorming, Ideation, Creative Problem-Solving, Root Cause Analysis, Value Engineering, Design Thinking, Systems Thinking, New Product Development, Cognitive flexibility, Open Mindset, Organizational Leadership, Team Leadership, Diversity and Inclusion, Creativity, Team Motivation, Team Collaboration, Diversity Awareness, Leadership
Beginner · Specialization · 3 - 6 Months