Core Java courses can help you learn object-oriented programming, exception handling, multithreading, and Java Collections. You can build skills in writing efficient algorithms, debugging code, and developing user interfaces. Many courses introduce tools like Eclipse and IntelliJ IDEA, which are commonly used for coding and testing Java applications, along with frameworks such as Spring and Hibernate that facilitate web development and database management.

Universitat Politècnica de València
Skills you'll gain: Building Information Modeling, Sustainable Development, Sustainable Technologies, Sustainable Architecture, Stakeholder Engagement, Sustainable Design, Building Design, Electrical Power, Sustainable Engineering, Environmental Engineering, Climate Change Adaptation, Materials science, Climate Change Mitigation, Emerging Technologies, Cross-Functional Collaboration
Intermediate · Course · 1 - 3 Months

Northeastern University
Skills you'll gain: Database Design, Database Theory, Database Management, Database Systems, Relational Databases, Databases, Database Management Systems, SQL, NoSQL, Data Modeling, Unified Modeling Language, Data Manipulation, Performance Tuning
Build toward a degree
Mixed · Course · 1 - 3 Months

Northeastern University
Skills you'll gain: Algorithms, Graph Theory, Computational Thinking, Programming Principles, Pseudocode, Theoretical Computer Science, Data Structures, Computer Programming, Performance Tuning
Mixed · Course · 1 - 3 Months
Coursera
Skills you'll gain: Scenario Testing, Testability, Software Testing, Integration Testing, Test Case, Test Automation, Acceptance Testing, Test Tools, Regression Testing, Test Planning, Test Execution Engine, Maintainability, Restful API, Security Testing, Test Data, Scalability, Debugging, Authentications, Compliance Reporting, Automation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, TypeScript, Angular, Test Case, Software Testing, JavaScript Frameworks, Testability, Development Testing, Code Coverage, Integration Testing, Javascript, Node.JS, Debugging, Mockups, Simulations
Intermediate · Specialization · 1 - 4 Weeks

Packt
Skills you'll gain: Node.JS, Javascript, Event-Driven Programming, Web Applications, Web Servers, Software Installation, Server Side, Application Development, JSON, Real Time Data, File Management, Command-Line Interface, TCP/IP, OS Process Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Object Oriented Programming (OOP), Application Development, Development Environment, User Interface (UI), Python Programming, Integrated Development Environments, User Interface (UI) Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Prompt Engineering Tools, LLM Application, No-Code Development, Tool Calling, Generative AI Agents, ChatGPT, OpenAI, Automation, Application Development, Application Programming Interface (API), Data Integration, Software Installation
Beginner · Course · 1 - 3 Months

Pearson
Skills you'll gain: Continuous Delivery, CI/CD, Continuous Deployment, DevOps, Organizational Change, Culture Transformation, Continuous Integration, Application Deployment, Infrastructure as Code (IaC), YAML, Software Development, Performance Metric, Microservices, Operational Excellence, Continuous Improvement Process, Configuration Management, Scripting
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Logo Design, Graphic and Visual Design, Animations, Branding, Marketing Design, Design, Social Media Content, Scheduling, Typography
Beginner · Course · 1 - 3 Months

Skills you'll gain: User Interface (UI) Design, Graphical Tools, Python Programming, Computer Graphics, Image Quality, Application Programming Interface (API)
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cloud-Native Computing, Cloud Applications, Application Design, Google Cloud Platform, Data Store, Cloud API, Application Development, Cloud Storage, Software Development, Cloud Services, Data Storage, Microservices, Development Environment, Node.JS
Intermediate · Course · 1 - 3 Months