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.

Starweaver
Skills you'll gain: E-Commerce, Supply Chain Management, Procurement, Supply Chain, Logistics Management, Order Fulfillment, Supplier Management, Inventory Management System, Logistics, Business Technologies, Technology Strategies, Corporate Sustainability, Process Optimization, Demand Planning, Forecasting, Automation, Data-Driven Decision-Making
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Ethics, MLOps (Machine Learning Operations), Applied Machine Learning, Machine Learning, Responsible AI, Performance Measurement, Predictive Modeling, Leadership and Management, Predictive Analytics, Data Processing, Fraud detection, Business Leadership, Business Transformation, Data-Driven Decision-Making, Business Priorities, Data Science
Beginner · Course · 1 - 4 Weeks

Codio
Skills you'll gain: Algorithms, C++ (Programming Language), Data Structures, Theoretical Computer Science, Computer Programming, Programming Principles, Computational Thinking
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Autodesk Revit, Building Information Modeling, Document Management, Construction, Engineering Documentation, Architectural Drawing, Project Coordination, Computer-Aided Design, Digital Transformation, Architectural Design, Collaboration, 3D Modeling, Data Management, Data Modeling, Coordination, Data Visualization
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Debugging, R Programming, Data Structures, Microsoft Development Tools, Software Documentation, Programming Principles, Program Development, Development Environment, Data Manipulation, Integrated Development Environments, Scripting Languages, Scripting
Beginner · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: Generative AI Agents, Agentic systems, LLM Application, Generative AI, Large Language Modeling, Artificial Intelligence, Tool Calling, Prompt Engineering, Software Design Patterns
Beginner · Project · Less Than 2 Hours

Coursera
Skills you'll gain: Hypertext Markup Language (HTML), Web Content Accessibility Guidelines, Semantic Web, Web Content, Information Architecture, Web Design and Development, Web Development, Front-End Web Development
Beginner · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Web Development, Application Development, Web Applications, JSON, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Software Engineering, Functional Design, Computer Science
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Blockchain, Transaction Processing, Event-Driven Programming, Front-End Web Development, JavaScript Frameworks, Development Environment, Web Development, Web Applications, Secure Coding, React.js, Application Development, Javascript, Real Time Data
Intermediate · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Operating Systems, OS Process Management, System Programming, File Systems, Unix Commands, Command-Line Interface, System Monitoring, System Design and Implementation, Performance Tuning, Package and Software Management, File Management, Algorithms, Cloud Platforms, Security Controls, User Accounts, Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: R Programming, R (Software), Data Visualization, Time Series Analysis and Forecasting, Interactive Data Visualization, Tidyverse (R Package), Data-Driven Decision-Making, Trend Analysis, Rmarkdown, Data Processing, Data Analysis, Predictive Modeling, Data Cleansing, Data Manipulation, Revenue Management, Forecasting, Business Strategy, Demand Planning, Machine Learning
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Prompt Engineering, LLM Application, Responsible AI, Application Deployment, Application Development, Large Language Modeling, Artificial Intelligence, Generative AI, Open Source Technology, Application Security, Continuous Monitoring
Intermediate · Course · 1 - 4 Weeks