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.

Board Infinity
Skills you'll gain: Arithmetic, Logical Reasoning, Applied Mathematics, Algebra, General Mathematics
Beginner · Course · 1 - 4 Weeks

Starweaver
Skills you'll gain: E-Commerce, Strategic Sourcing, Supply Chain Management, Supply Chain, Supply Chain Planning, Logistics Management, Order Fulfillment, Logistics, Business Technologies, Technology Strategies, Corporate Sustainability, Process Optimization, Customer experience improvement, Automation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Import/Export, Data Storage
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Django (Web Framework), Web Applications, Web Development, Expense Reports, Back-End Web Development, Expense Management, Application Development, Database Application, Data Visualization, Business Process Automation, Chart.js, Data Modeling, Business Logic, Development Environment, Data Security, GitHub, Javascript, Project Documentation, Git (Version Control System)
Intermediate · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Data Import/Export, Web Scraping, Tidyverse (R Package), Data Wrangling, Data Integration, Data Manipulation, JSON, Data Transformation, Relational Databases, R (Software), Google Sheets, Unstructured Data, R Programming, Extensible Markup Language (XML), Spreadsheet Software, Databases, SQL, Data Structures, File I/O, Application Programming Interface (API)
Beginner · Course · 1 - 3 Months

Universiteit Leiden
Skills you'll gain: Predictive Analytics, Predictive Modeling, Model Evaluation, R Programming, Preventative Care, Statistical Modeling, Sample Size Determination, Regression Analysis, Data Preprocessing, Diagnostic Tests
Intermediate · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Prompt Patterns, Prompt Engineering Tools, LangChain, Retrieval-Augmented Generation, Generative AI, AI Workflows, LLM Application, Large Language Modeling, OpenAI API, Data Synthesis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: R Programming, Predictive Analytics, Applied Machine Learning, Predictive Modeling, Data Pipelines, R (Software), Data-Driven Decision-Making, Analytics, Data Science, Data Processing, Machine Learning Software, Feature Engineering, Data Preprocessing, Statistical Machine Learning, Machine Learning Methods, Machine Learning, Model Training, Telemarketing, Model Deployment, Model Optimization
Intermediate · Guided Project · Less Than 2 Hours

University of Minnesota
Skills you'll gain: Team Building, Clinical Leadership, Team Collaboration, Team Leadership, Leadership Development, Professional Development, Leadership, Health Informatics, Nursing Management, Initiative and Leadership, Informatics, Cultural Diversity
Intermediate · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Media Relations, Internal Communications, Crisis Management, Strategic Communication, Communication Planning, Public Relations, Media Strategy, Communication Strategies, Stakeholder Communications, AI literacy, AI Integrations, Real Time Data
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, JUnit, Object Oriented Programming (OOP), Software Design Patterns, Software Engineering, Java, Unified Modeling Language, Software Design, Java Programming, Software Architecture, Model View Controller, Conceptual Design
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Architecture, Data Lakes, Enterprise Architecture, Data Warehousing, Data Integration, Virtualization, Cloud Storage, Metadata Management, Data Storage, Data Transformation, Scalability
Intermediate · Course · 1 - 3 Months