Object Oriented Programming courses can help you learn core concepts like classes, objects, inheritance, and polymorphism. You can build skills in designing robust software architectures, implementing design patterns, and writing reusable code. Many courses introduce tools such as Java, Python, and C++, which are commonly used in software development, enabling you to apply your knowledge in practical coding projects. Additionally, you may explore frameworks that enhance object-oriented principles, further enriching your programming toolkit.

Coursera
Skills you'll gain: AI Orchestration, AI Workflows, LLM Application, Agentic Workflows, Generative AI Agents, Agentic systems, Tool Calling, LangChain, Artificial Intelligence, Memory Management, Model Evaluation, Development Testing, Debugging
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Data Cleansing, Data Manipulation, Data Integration, R Programming, Data Wrangling, Data Preprocessing, Tidyverse (R Package), Data Processing, R (Software), Data Management
★ 4.2 (6) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Full-Stack Web Development, Node.JS, User Interface (UI), Restful API, Frontend Integration, Back-End Web Development, User Interface (UI) Design, User Accounts, Server Side, Swift Programming, Object-Relational Mapping, Web Development Tools, JavaScript Frameworks, Secure Coding, Data Store, Application Programming Interface (API), API Design, iOS Development, UI Components, Authentications
Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Restful API, Web Services, Java Platform Enterprise Edition (J2EE), Software Design, Java, Application Programming Interface (API), API Design, Software Design Patterns, Software Architecture, Command-Line Interface
★ 4.3 (16) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Apache Maven, Unit Testing, Spring Framework, Spring Boot, Restful API, API Testing, Software Testing, Test Case, Application Programming Interface (API), Gradle, Build Tools, Software Development Tools, Integration Testing, Application Frameworks, Authentications
Intermediate · Course · 1 - 3 Months

Universidad de los Andes
Skills you'll gain: Augmented and Virtual Reality (AR/VR), Augmented Reality, Virtual Reality, Virtual Environment, Display Devices, Experience Design, Computer Programming Tools, Program Development, Peripheral Devices
★ 4.8 (25) · Beginner · Course · 1 - 3 Months

Xi'an Jiaotong University
Skills you'll gain: File I/O, Programming Principles, C# (Programming Language), UI Components, Microsoft Windows, User Interface (UI), Computer Graphics, File Management, Command-Line Interface, Graphical Tools, Event-Driven Programming, Interactive Design, Application Development
★ 4.7 (7) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Git (Version Control System), Selenium (Software), Test Automation, Jenkins, Test Script Development, Software Versioning, Continuous Integration, Test Tools, Continuous Delivery, Test Data, Test Case, Software Testing, CI/CD, Code Reusability, Command-Line Interface, File I/O
★ 4.8 (6) · Advanced · Course · 1 - 3 Months

Coursera
Skills you'll gain: SQL, PostgreSQL, Data Manipulation
★ 4.6 (23) · Intermediate · Guided Project · Less Than 2 Hours

Duke University
Skills you'll gain: Retrieval-Augmented Generation, LLM Application, Model Deployment, Microsoft Azure, OpenAI API, Large Language Modeling, OpenAI, Application Deployment, Application Development, Application Programming Interface (API)
★ 2.5 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Pipelines, Microsoft SQL Servers, Microsoft Azure, Database Development, Data Warehousing, SQL, Data Integration, Data Maintenance, Extract, Transform, Load
★ 4.2 (14) · Intermediate · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), Browser Compatibility, Animations, HTML and CSS, Web Design, Web Development
★ 4.7 (9) · Intermediate · Course · 1 - 4 Weeks