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.

28DIGITAL
Skills you'll gain: Semantic Web, Query Languages, Data Management, Data Integration, Data Processing, Data Access, Data Sharing, Web Applications, Data Mining, Interoperability, Software Architecture, Data Architecture, Data Modeling
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Validation, Data Integrity, Hypertext Markup Language (HTML), Verification And Validation, Scripting, Javascript, Web Applications
Intermediate · Guided Project · Less Than 2 Hours

Codio
Skills you'll gain: Algorithms, C++ (Programming Language), C and C++, Data Structures, Theoretical Computer Science, Computer Programming
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Visual Basic (Programming Language), Development Environment, Program Development, Microsoft Development Tools, Microsoft Visual Studio, Programming Principles, .NET Framework, Computer Programming, Integrated Development Environments, Software Development, Software Installation, Debugging
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: JavaScript Frameworks, React.js, Application Development, Application Frameworks, Application Deployment, Web Frameworks, Web Applications, Front-End Web Development, Development Environment, Cascading Style Sheets (CSS), Web Development, Routing Protocols, Frontend Performance, Responsive Web Design, Configuration Management, Scalability
Beginner · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Energy and Utilities, Equipment Design, Radiation Protection, Waste Minimization, Plant Operations and Management, Thermal Management, Materials science, Production Process, Manufacturing Processes, Process Engineering, Chemical Engineering, Engineering Design Process, Process Control, Facility Management, Engineering Calculations, Control Systems, Environmental Engineering, Cost Estimation, Chemistry, Natural Resource Management
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Azure DevOps Pipelines, Kubernetes, Azure DevOps, Node.JS, CI/CD, DevOps, Microsoft Azure, Devops Tools, Test Planning, Continuous Integration, Continuous Delivery, Application Lifecycle Management, Microservices, Containerization, Software Testing, Debugging, Software Development Tools, Cloud Deployment, Scripting, Version Control
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Natural Language Processing, grep, Text Mining, Clinical Informatics, Clinical Documentation, Clinical Data Management, R (Software), R Programming, Google Cloud Platform, Health Informatics, Unstructured Data, Data Processing
Intermediate · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Memory Management, C and C++, C++ (Programming Language), C (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Data Structures, Software Design, Python Programming, Java, Algorithms, Performance Tuning
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: SQL, Relational Databases, Database Design, Database Management, Database Application, Query Languages, Databases, Data Manipulation, Database Management Systems
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Technical Analysis, Data Literacy, Financial Trading, Financial Market, Descriptive Statistics, Market Data, Statistics, Portfolio Risk, Statistical Methods, Derivatives, Risk Modeling, Market Analysis, Statistical Analysis, Market Dynamics, Securities Trading, Risk Analysis, Verification And Validation, Securities (Finance), Data Analysis, International Finance
Beginner · Specialization · 1 - 3 Months

Emory University
Skills you'll gain: Financial Statements, Return On Investment, Business Strategy, Cash Flows, Financial Statement Analysis, Operations, Supply Chain, Business Strategies, Supply Chain Management, Financial Analysis, Strategic Thinking, Income Statement, Corporate Finance, Marketing Strategy and Techniques, Marketing Effectiveness, Business Valuation, Marketing Strategies, Market Dynamics, Marketing Communications, Lean Six Sigma
Beginner · Specialization · 3 - 6 Months