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.

Princeton University
Skills you'll gain: Data Structures, Algorithms, Theoretical Computer Science, Java, Computational Thinking, Graph Theory, Performance Testing
Intermediate · Course · 3 - 6 Months

The State University of New York
Skills you'll gain: Bioinformatics, Big Data, Analytics, Data Mining, Health Informatics, Biomedical Technology, Data Processing, R Programming, Predictive Modeling, Statistical Analysis, Molecular Biology, Feature Engineering, Network Analysis, Unsupervised Learning
Advanced · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: User Accounts, Mobile Security, Cloud Computing, Security Controls, Identity and Access Management, Cloud Security, Security Assertion Markup Language (SAML), Single Sign-On (SSO), Role-Based Access Control (RBAC), System Configuration, Multi-Factor Authentication, Data Loss Prevention
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, Unified Modeling Language, Object Oriented Programming (OOP), Test Driven Development (TDD), JUnit, Java, Unit Testing, Software Testing, Software Engineering, Software Design Patterns, Java Programming, Software Design, Systems Analysis, Conceptual Design
Build toward a degree
Intermediate · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Matplotlib, Data Analysis, Pandas (Python Package), Data Visualization, Data Science, Data Cleansing, Pivot Tables And Charts, Data Visualization Software, Data Manipulation, Scatter Plots, NumPy, Data Transformation, Jupyter, Data Validation, Data Import/Export, Histogram, Python Programming, Data Structures, Programming Principles, Scripting Languages
Beginner · Course · 1 - 4 Weeks

IESE Business School
Skills you'll gain: Sustainable Business, Corporate Sustainability, Environmental Social And Corporate Governance (ESG), Business Strategy, Sustainability Reporting, Environmental Issue, Strategic Thinking, Strategic Decision-Making, Compliance Management, Stakeholder Engagement, Consumer Behaviour
Beginner · Course · 1 - 3 Months

University of Toronto
Skills you'll gain: Apple iOS, Swift Programming, Apple Xcode, Mobile Development, Application Design, Application Development, User Interface (UI), Interaction Design, Animations, Computer Graphics, Persistence, Network Model, Data Storage
Mixed · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Shiny (R Package), Rmarkdown, Plotly, Interactive Data Visualization, Data Visualization, Data Presentation, Data Visualization Software, R (Software), R Programming, Data Mapping, Statistical Reporting, Web Applications, Package and Software Management
Mixed · Course · 1 - 3 Months

Packt
Skills you'll gain: Spring Boot, Hibernate (Java), Web Applications, Application Development, Application Deployment, Restful API, Application Frameworks, Bootstrap (Front-End Framework), Development Environment, Model View Controller, Java Platform Enterprise Edition (J2EE), UI Components, Authentications, Databases
Intermediate · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Apache Hadoop, Scala Programming, Distributed Computing, Big Data, Data Manipulation, Data Processing, Performance Tuning, Data Transformation, SQL, Data Analysis
Intermediate · Course · 1 - 4 Weeks

University of Pittsburgh
Skills you'll gain: Triage, Mitigation, Crisis Intervention, Emergency Response, Safety and Security, Emergency Medicine, First Aid, Healthcare Ethics, Risk Analysis, Resourcefulness, Adaptability, Cultural Diversity, Water Quality
Beginner · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Business Analytics, Forecasting, Statistical Methods, Predictive Analytics, R Programming, Information Technology, Statistical Analysis, People Analytics, Data Storytelling, Business Strategy, Data Analysis, Data Visualization, Regression Analysis
Mixed · Course · 1 - 3 Months