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.

Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Algorithms, Application Programming Interface (API), Data Structures
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Redis, Restful API, ASP.NET, .NET Framework, Application Programming Interface (API), Object-Relational Mapping, API Design, PostgreSQL, Middleware, Maintainability, Software Architecture, Software Design Patterns, Distributed Computing, Data Validation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cucumber (Software), Selenium (Software), Apache Maven, Java, Java Programming, Object Oriented Programming (OOP), Issue Tracking, Build Tools, Test Automation, Behavior-Driven Development, Test Script Development, Test Case, Software Testing, Data Structures, Package and Software Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Energy and Utilities, Mathematical Modeling, Predictive Analytics, Gemini, Laboratory Experience, Google Gemini, Model Optimization, Predictive Modeling, Data-Driven Decision-Making, Forecasting, Analytics, 3D Modeling, Simulations, Sustainable Technologies, Data Visualization, AI Integrations, Search Engine Optimization
Intermediate · Course · 1 - 4 Weeks

University of Pittsburgh
Skills you'll gain: Data Storytelling, Interactive Data Visualization, Data Presentation, Plot (Graphics), Data Visualization Software, Spatial Data Analysis, Datamaps, Data Visualization, Tableau Software, Leaflet (Software), Spatial Analysis, Network Model, Dashboard Creation, Dashboard, Matplotlib, Seaborn, Geospatial Information and Technology, Time Series Analysis and Forecasting, Network Analysis, Geospatial Mapping
★ 3.7 (6) · Intermediate · Specialization · 3 - 6 Months
Skills you'll gain: Organizational Skills, Project Management Software, Organizational Structure, Collaborative Software, Organizational Effectiveness, Team Management, Project Management, User Accounts
★ 4.6 (19) · Beginner · Guided Project · Less Than 2 Hours

Universitat Autònoma de Barcelona
Skills you'll gain: Organizational Leadership, Organizational Development, Organizational Structure, Qualitative Research, Organizational Effectiveness, Industrial and Organizational Psychology, Culture, Psychosocial Assessments, Research Methodologies, Leadership, Sustainable Development, Analysis
★ 4.8 (30) · Beginner · Course · 1 - 4 Weeks

Eindhoven University of Technology
Skills you'll gain: Laboratory Equipment, Engineering, Scientific, and Technical Instruments, Systems Of Measurement, Building Design, Laboratory Procedures, Simulation and Simulation Software, Architectural Design, Simulations, Architecture and Construction, Human Factors, Design Strategies, Physics, Physiology, 3D Modeling
Mixed · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: White-Box Testing, Test Planning, Test Case, Software Testing, Software Documentation, Test Automation, Software Quality Assurance, Code Review, Test Data, Issue Tracking, Software Technical Review, Quality Assurance, Development Environment, Technical Communication
★ 4.5 (11) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: LangChain, LLM Application, Retrieval-Augmented Generation, LangGraph, AI Workflows, Large Language Modeling, AI Orchestration, Responsible AI, Generative AI, Token Optimization, Agentic systems, Prompt Engineering, Generative AI Agents, Natural Language Processing, Cloud Development, Application Programming Interface (API), Python Programming, Application Deployment, Data Processing, Pandas (Python Package)
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Make.com, AI Workflows, Microsoft Power Automate/Flow, Agentic Workflows, Business Process Automation, Generative AI Agents, Process Flow Diagrams, No-Code Development, AI Orchestration, Agentic systems, Process Mapping, Business Workflow Analysis, Process Design, Workflow Management, Automation, Process Improvement, Process Optimization, Continuous Improvement Process, Operational Efficiency, IT Automation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: WordPress, Ajax, Development Environment, Content Management Systems, Content Management, Secure Coding, Web Development, Data Management, Web Design and Development, PHP (Scripting Language), Database Management, Dashboard Creation, Cascading Style Sheets (CSS), Application Security, Javascript
★ 4 (6) · Intermediate · Specialization · 1 - 4 Weeks