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: Tidyverse (R Package), Rmarkdown, R Programming, Ggplot2, Data Import/Export, Data Visualization, Statistical Visualization, Data Manipulation, Data Visualization Software, Data Analysis, Data Science, Data Storytelling, Statistical Analysis, Relational Databases, Data Cleansing, Data Transformation, Statistical Programming, Data Integration, Data Wrangling, Communication
Beginner · Specialization · 1 - 3 Months

Indian Institute for Human Settlements
Skills you'll gain: Innovation, Sustainable Development, Environmental Issue, Social Sciences, Economics, Policy, and Social Studies, Policy Analysis, Climate Change Adaptation, Systems Thinking, Emerging Technologies, Research, Big Data
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Migration, Cloud Storage, Data Management, Data Integration, Data Storage, Data Infrastructure, Data Architecture, Extract, Transform, Load, Data Security, Data Pipelines, Disaster Recovery
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Oracle Cloud, Oracle Databases, Identity and Access Management, Cloud Computing Architecture, Cloud Infrastructure, Database Application, Cloud Security, Data Storage, Computing Platforms, Cloud Services, Cloud Storage, Data Storage Technologies, Cloud Computing, Infrastructure As A Service (IaaS), Data Security, Scalability, Encryption, Network Routing
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: React.js, Web Applications, Hypertext Markup Language (HTML), Front-End Web Development, JavaScript Frameworks, Javascript, Cascading Style Sheets (CSS), Web Development, User Interface (UI)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Hardening, Distributed Denial-Of-Service (DDoS) Attacks, Incident Response, Network Architecture, Network Security, Computer Security Incident Management, Intrusion Detection and Prevention, Incident Management, Network Protocols, Threat Detection, Event Monitoring, Threat Management, Network Infrastructure, Security Controls, Cybersecurity, System Monitoring, Operating Systems, Linux, Bash (Scripting Language), Databases
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Programming Principles, Computer Programming, Python Programming, Scripting, Computational Logic, Scripting Languages, Computer Science
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: React.js, JavaScript Frameworks, UI Components, Javascript, Web Development, User Interface (UI)
Intermediate · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Microsoft Power Platform, Power BI, Microsoft Power Automate/Flow, Generative AI Agents, No-Code Development, Systems Integration, Application Design
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Design Elements And Principles
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Program Development, C and C++, C++ (Programming Language), Object Oriented Programming (OOP), Computer Programming, Development Environment, Software Development, Computer Science
Beginner · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: ASP.NET, Restful API, .NET Framework, Web Services, JSON, Application Frameworks, Model View Controller, Web Applications, Back-End Web Development, Application Programming Interface (API), Server Side, Extensible Markup Language (XML), Application Security, Object-Relational Mapping
Intermediate · Course · 1 - 4 Weeks