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.

Rice University
Skills you'll gain: World History, Liberal Arts, International Relations, Intercultural Competence, Cultural Diversity, Social Studies, Political Sciences, Economics, Sociology
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: ASP.NET, Microsoft Copilot, .NET Framework, Application Programming Interface (API), Middleware, Server Side, Restful API, C# (Programming Language), Back-End Web Development, Application Frameworks, JSON, Software Documentation, Secure Coding, Programming Principles, Extensible Markup Language (XML)
Beginner · Course · 1 - 3 Months

Skills you'll gain: Natural Language Processing, Microsoft Azure, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Analytics, Automation, Application Development
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Portfolio Risk, Financial Market, Risk Management, Risk Analysis, Financial Trading, Probability Distribution, R (Software), Financial Data, R Programming, Portfolio Management, Statistical Programming, Securities (Finance), Time Series Analysis and Forecasting, Estimation, Statistical Modeling, Simulation and Simulation Software
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Community Mental Health Services, Mental Health, Psychiatry, Mental Health Therapies, Health Disparities, Clinical Psychology, Mental Health Diseases and Disorders, Psychotherapy, Psychology, Cognitive Behavioral Therapy, Cultural Diversity, Behavioral Health, Substance Abuse, Empathy & Emotional Intelligence, Advocacy
Beginner · Course · 1 - 3 Months

Skills you'll gain: API Testing, Test Automation, Test Script Development, Application Programming Interface (API), Test Case, Restful API, Software Testing, Configuration Management, Java Programming
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: JSON, Restful API, HTML and CSS, Web Design, Cloud API, Hypertext Markup Language (HTML), Web Development, Cascading Style Sheets (CSS), Web Applications, Responsive Web Design, Real Time Data, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: File I/O, Data Import/Export, C++ (Programming Language), Data Structures, File Management, Computer Programming, Data Store, Computer Science
Beginner · Course · 1 - 4 Weeks

Imperial College London
Skills you'll gain: Health Promotion, Behavioral Economics, Public Health, Applied Behavior Analysis, Social Determinants Of Health, Public Health and Disease Prevention, Health Policy, Cultural Diversity, Psychology, Risk Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Email Automation, Google Workspace, Google Sheets, Stakeholder Communications, Test Tools, Scripting, Timelines, Project Schedules, Project Management, Web Applications, Javascript, Data Validation
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: HVAC, Building Services Engineering, Thermal Management, Mechanical Engineering, Engineering Calculations, Energy and Utilities, Estimation, Environmental Issue
Intermediate · Course · 1 - 4 Weeks

Yonsei University
Skills you'll gain: Text Mining, Data Preprocessing, Natural Language Processing, Classification Algorithms, Data Analysis, Java, Unsupervised Learning, Machine Learning Methods, Supervised Learning
Intermediate · Course · 1 - 3 Months