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.

LearnQuest
Skills you'll gain: Model View Controller, Spring Framework, Restful API, Spring Boot, Web Services, Frontend Integration, JSON, YAML, Web Applications, Configuration Management, Angular, Java Programming, Software Architecture, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Node.JS, Restful API, Database Design, Front-End Web Development, React Redux, Ajax, Database Development, Database Application, Server Side, Back-End Web Development, NoSQL, Javascript, Full-Stack Web Development, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
Beginner · Specialization · 3 - 6 Months

University of Manchester
Skills you'll gain: Biotechnology, Biological Engineering, Sustainable Technologies, Process Engineering, Molecular Biology, Chemical Engineering, Molecular, Cellular, and Microbiology, Sustainable Engineering, Life Sciences, Biochemistry, Pharmaceuticals, Manufacturing and Production, Materials science, Medical Science and Research, Drug Development, Process Analysis, Scalability
Beginner · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Android Development, Android Studio, Mobile Development, Java, Android (Operating System), Object Oriented Programming (OOP), Mockups, Java Programming, Data Persistence, Application Deployment, JSON, Web Services, Application Design, Object Oriented Design, Restful API, Mobile Development Tools, Application Development, Data Storage Technologies, Software Design, Instagram
Intermediate · Specialization · 3 - 6 Months

Atlassian
Skills you'll gain: Git (Version Control System), Version Control, GitHub, Bitbucket, Software Versioning, Software Configuration Management, Continuous Integration, Command-Line Interface, Collaborative Software
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Data Store, Data Architecture, Apache Hadoop, Extract, Transform, Load, Relational Databases, Big Data, Data Storage, Databases, Operational Databases, Apache Spark, Data Storage Technologies, Data Lakes, Data Warehousing, Data Governance, Data Pipelines, Data Integration, Data Processing, SQL, NoSQL, Data Science
Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Object Oriented Programming (OOP), C (Programming Language), Python Programming, Data Import/Export, Memory Management, File I/O, Computational Logic, Network Protocols, Package and Software Management
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Data Visualization, Data Presentation, Generative AI, Version Control, Git (Version Control System), Matplotlib, Exploratory Data Analysis, Data Cleansing, Pandas (Python Package), R Programming, Tidyverse (R Package), Ggplot2, Python Programming, Jupyter, Microsoft Visual Studio, GitHub, Statistical Visualization, Data Storytelling, NumPy, Machine Learning Methods
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Angular, TypeScript, JavaScript Frameworks, UI Components, Frontend Performance, React Native, Web Applications, Front-End Web Development, React.js, Javascript, Web Development, Frontend Integration, Restful API, User Interface (UI), Unit Testing
Intermediate · Course · 3 - 6 Months

Microsoft
Skills you'll gain: Excel Macros, Data Visualization, Prompt Engineering, Excel Formulas, Microsoft Excel, Data Presentation, Pivot Tables And Charts, Microsoft Copilot, Data Visualization Software, Data Storytelling, Spreadsheet Software, Forecasting, Dashboard Creation, Report Writing, Data Cleansing, Data Analysis, Data Synthesis, Predictive Modeling, Workflow Management, Data Manipulation
Beginner · Professional Certificate · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Shiny (R Package), Rmarkdown, Model Evaluation, Regression Analysis, Leaflet (Software), Exploratory Data Analysis, Statistical Inference, Predictive Modeling, Statistical Hypothesis Testing, Machine Learning Algorithms, Plotly, Interactive Data Visualization, Probability & Statistics, Data Presentation, Data Visualization, Statistical Analysis, Statistical Modeling, R Programming, Machine Learning, GitHub
Intermediate · Specialization · 3 - 6 Months
University of London
Skills you'll gain: Computer Science, Debugging, Development Environment, Computer Systems, Web Applications, Arithmetic, Computer Literacy, General Networking, Javascript, Network Security, Computer Networking, Application Security, Computational Thinking, Computer Programming Tools, Visualization (Computer Graphics), Applied Mathematics, Computer Programming, General Mathematics, Numerical Analysis, Problem Solving
Build toward a degree
Beginner · Specialization · 1 - 3 Months