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.

Skills you'll gain: Software Development Life Cycle, Object Oriented Programming (OOP), Java Programming, Java, Program Development, Software Development, Development Environment, Integrated Development Environments, Computer Programming, Software Engineering, Programming Principles
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Spring Framework, Microservices, JUnit, Model View Controller, Hibernate (Java), Restful API, Spring Boot, Software Architecture, API Gateway, Web Services, Object-Relational Mapping, Transaction Processing, Service Oriented Architecture, Cloud Computing Architecture, JSON, YAML, Load Balancing, Unit Testing, Software Configuration Management, Java Programming
Beginner · Specialization · 1 - 3 Months

University of California San Diego
Skills you'll gain: Data Structures, Graph Theory, Algorithms, Program Development, Bioinformatics, Data Storage, Development Testing, Theoretical Computer Science, Computational Thinking, Network Analysis, Programming Principles, File Systems, Computer Programming, Python Programming, C and C++, Java, Rust (Programming Language), Javascript, Software Testing, Debugging
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Project Management Life Cycle, Change Management, Organizational Structure, Project Management, Project Coordination, Organizational Change, Agile Methodology, Project Planning, Waterfall Methodology, Interpersonal Communications, Strategic Thinking
Beginner · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Android Development, Android Studio, Java, Mobile Development, Object Oriented Programming (OOP), Android (Operating System), Mockups, Java Programming, Application Design, Application Development, Mobile Development Tools, Application Deployment, Software Design Patterns, JSON, Prototyping, User Interface (UI) Design, Cloud Applications, Application Lifecycle Management, User Interface (UI), Instagram
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Storytelling, Data Presentation, Interactive Data Visualization, Data Visualization, Data Visualization Software, Big Data, Microsoft Excel, IBM Cognos Analytics, Data Analysis, Statistical Analysis, Apache Hadoop, Analytical Skills, Excel Formulas, Looker (Software), Scatter Plots, Data Wrangling, Tree Maps, Spreadsheet Software, Dashboard, Data Cleansing
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Cascading Style Sheets (CSS), User Experience Design, User Interface and User Experience (UI/UX) Design, User Experience, Design Research, Linux Commands, User Centered Design, Debugging, User Interface (UI), UI Components, Software Versioning, Software Visualization, Web Content Accessibility Guidelines, Pseudocode, JavaScript Frameworks, Javascript, Web Applications, Unit Testing, Application Development, API Design
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

LearnQuest
Skills you'll gain: Model View Controller, Spring Framework, Restful API, Spring Boot, Web Services, JSON, YAML, Java, Web Applications, Configuration Management, Angular, Java Programming, Application Frameworks, Software Architecture, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Git (Version Control System), Android Development, Android Studio, Mobile Development, Java Programming, Java, Application Development, Event-Driven Programming, Computer Programming
Mixed · Course · 1 - 3 Months
Johns Hopkins University
Skills you'll gain: Rmarkdown, Exploratory Data Analysis, Version Control, Statistical Analysis, R Programming, Data Manipulation, Data Cleansing, Data Science, Data Wrangling, Plot (Graphics), Statistical Programming, Statistical Visualization, Ggplot2, R (Software), Dimensionality Reduction, Data Visualization Software, Knitr, Data Sharing, GitHub, Machine Learning
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Storytelling, Dashboard, Data Warehousing, SQL, Data Presentation, Data Visualization, Interactive Data Visualization, Data Security, Data Migration, Database Design, Data Governance, MySQL, Data Store, Data Management, Relational Databases, Databases, Exploratory Data Analysis, Data Architecture, Excel Formulas, Business Intelligence
Beginner · Professional Certificate · 3 - 6 Months

Princeton University
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Theoretical Computer Science, Computational Thinking, Computer Programming, Network Routing, Cryptography, Java Programming, Linear Algebra
Intermediate · Course · 3 - 6 Months