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.

University of Colorado Boulder
Skills you'll gain: Mathematical Modeling, Software Systems, Mechanical Engineering, Systems Analysis, Systems Engineering, Applied Mathematics, Differential Equations, Hardware Architecture, Verification And Validation, Linear Algebra
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Shell Script, Unix Shell, File Management, File Systems, Unix Commands, Operating Systems, Command-Line Interface, OS Process Management, System Configuration
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Microsoft Copilot, Microsoft Visual Studio, GitHub, Code Review, Integrated Development Environments, Program Development, Software Documentation, Maintainability, Computer Programming Tools, Test Automation, Web Development Tools, Software Technical Review, Technical Documentation, Test Case, Debugging, React.js
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: React.js, Responsive Web Design, Front-End Web Development, Bootstrap (Front-End Framework), JavaScript Frameworks, UI Components, Javascript, HTML and CSS, Web Applications, Event-Driven Programming, Web Development, User Interface (UI)
Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Data Visualization, Exploratory Data Analysis, Plot (Graphics), Data Presentation, Ggplot2, R (Software), Statistical Visualization, R Programming, Data Visualization Software, Data Analysis, Scatter Plots, Graphic and Visual Design, Histogram, Tidyverse (R Package), Public Administration, Trend Analysis, Policy Analysis
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Data Warehousing, Data Architecture, Data Storage, Extract, Transform, Load, Star Schema, Cloud Storage, Data Mart, Database Design, Snowflake Schema, Query Languages, Metadata Management, Data Transformation
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Web Scraping, Relational Databases, Statistical Software, Data Import/Export, R Programming, MySQL, Data Capture, Microsoft Excel
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Generative AI Agents, LangChain, LLM Application, Agentic systems, Development Environment, Generative AI, OpenAI, Artificial Intelligence, Scalability, Virtual Environment, Performance Testing, Programming Principles, Performance Tuning, Design
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Health Promotion, Behavioral Health, Mental and Behavioral Health, Health Education, Cultural Sensitivity, Public Health, Health Policy, Community Health, Social Sciences, Program Evaluation, Learning Theory
Beginner · Course · 1 - 3 Months

Fundação Instituto de Administração
Skills you'll gain: Workforce Management, People Analytics, Big Data, HR Tech, Workforce Planning, Data Mining, Data-Driven Decision-Making, Human Resource Strategy, Deep Learning, Human Resources Management and Planning, Digital Transformation, Human Resources, Ggplot2, Data Visualization Software, Plot (Graphics), Data Modeling, R Programming, Data Science, Data Manipulation, Machine Learning
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Extensible Markup Language (XML), Extensible Languages and XML, Cascading Style Sheets (CSS), HTML and CSS, Data Validation, Data Mapping, Verification And Validation, Data Sharing, Javascript, Document Management, Hypertext Markup Language (HTML), Technical Documentation, Interoperability, Maintainability, Data Integrity, Information Architecture, Software Documentation, Data Management, Scripting, Web Content Accessibility Guidelines
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: React Redux, React.js, Javascript, Web Development Tools, Middleware, Web Development
Intermediate · Course · 1 - 4 Weeks