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.

Cisco Learning and Certifications
Skills you'll gain: Open Shortest Path First (OSPF), Network Protocols
Beginner · Course · 1 - 3 Months

Skills you'll gain: Mobile Development, Game Design, Video Game Development, User Interface (UI), Unity Engine, Android Development, C# (Programming Language), Animations, Scripting, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Server Side, Web Applications, Javascript, JSON, Node.JS, PHP (Scripting Language), Restful API, Application Programming Interface (API), Extensible Markup Language (XML), Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), User Interface (UI)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: C# (Programming Language), Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Encryption, Secure Coding, Cryptography, File I/O, Python Programming, Programming Principles, Debugging, Scripting, Data Structures
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: JUnit, Apache Maven, Model View Controller, Unit Testing, Frontend Integration, Spring Boot, Restful API, Data Persistence, Software Testing, Java, Back-End Web Development, Application Frameworks, Front-End Web Development, Application Security, Business Logic
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Video Game Development, Unreal Engine, Game Design, User Interface (UI), Prototyping, Visualization (Computer Graphics), Artificial Intelligence, User Interface (UI) Design, Animations, Debugging
Mixed · Course · 1 - 3 Months

Skills you'll gain: AI Security, Responsible AI, Large Language Modeling, IT Security Architecture, Threat Modeling, Vulnerability Assessments, Threat Detection, Cybersecurity, Information Systems Security, Cyber Security Strategy, Security Strategy, Security Management, Cyber Attacks, Cloud Security, Security Awareness, Enterprise Security, Distributed Denial-Of-Service (DDoS) Attacks, Incident Response, Natural Language Processing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Deployment, DevOps, CI/CD, Application Deployment, Development Environment, Cloud Applications, Continuous Deployment, Version Control, Amazon Elastic Compute Cloud, Continuous Integration, Real Time Data, Kibana, Query Languages, Data Modeling, Distributed Computing, SQL, Data Mapping, NoSQL, Relational Databases, Scalability
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: HTML and CSS, Cascading Style Sheets (CSS), Verification And Validation, User Interface (UI), Web Design and Development, Browser Compatibility, Web Content Accessibility Guidelines, Web Development, Web Design, Data Validation, Web Development Tools, Debugging, Maintainability
Mixed · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Infrastructure as Code (IaC), Model Deployment, AI Workflows, Generative AI, Application Deployment, CI/CD, Amazon Elastic Compute Cloud, Continuous Deployment, AI Enablement, Cloud Deployment, Jenkins, Amazon Web Services, Terraform, Kubernetes, Docker (Software), Requirements Analysis, Release Management, Scalability
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Canva (Software), Storyboarding, Storytelling, Collaborative Software, Graphic and Visual Design, Team Oriented, Content Creation, Organizational Skills, Presentations
Intermediate · Guided Project · Less Than 2 Hours