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.

Institut Mines-Télécom
Skills you'll gain: Wireless Networks, Network Security, Network Architecture, Computer Networking, Mobile Security, Network Protocols, Telecommunications, Network Performance Management, Network Routing, Encryption, Capacity Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Performance Appraisal, Human Resource Strategy, Human Resources, Compensation Strategy, Talent Management, Performance Management, Organizational Development, Employee Engagement, Workforce Development, Talent Acquisition, Employee Retention, Case Studies
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Mathematical Modeling, Graphing, Algebra, General Mathematics, Applied Mathematics, Arithmetic
Beginner · Course · 1 - 4 Weeks

Princeton University
Skills you'll gain: Risk Analysis, Analysis, Systems Thinking, World History, International Relations, Social Network Analysis, Financial Systems, Public Health, Governance, Epidemiology, Complex Problem Solving, Economics, Supply Chain
Beginner · Course · 1 - 3 Months

Skills you'll gain: API Testing, Test Automation, Test Script Development, Application Programming Interface (API), Test Case, Restful API, Software Testing, Configuration Management, Java Programming
Intermediate · Guided Project · Less Than 2 Hours

Yonsei University
Skills you'll gain: Augmented Reality, Augmented and Virtual Reality (AR/VR), Multimedia, Emerging Technologies, Market Analysis, Market Opportunities, Cloud Services, Network Protocols, Application Development, Network Infrastructure, Computer Vision, Video Production, Content Management, User Interface (UI)
Beginner · Course · 1 - 3 Months

Yonsei University
Skills you'll gain: Wireless Networks, Telecommunications, Apple iOS, Display Devices, Product Planning, Android (Operating System), Business Strategy, Network Analysis, Emerging Technologies, Operating Systems, Peripheral Devices, Market Trend, Technical Standard
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: JSON, Event-Driven Programming, Javascript, Mobile Development, Data Structures, Application Development, Object Oriented Programming (OOP), Video Game Development, Web Applications, Data Persistence, Scripting, Computer Programming, Front-End Web Development, Web Development, Debugging
Beginner · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Health Promotion, Behavioral Economics, Public Health, Applied Behavior Analysis, Social Determinants Of Health, Public Health and Disease Prevention, Health Policy, Cultural Diversity, Psychology, Risk Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Audit Planning, Auditing, Internal Controls, Risk Management Framework, Continuous Monitoring, Compliance Auditing, Project Coordination, Financial Controls, Quality Assurance, Information Systems Security, Cyber Security Assessment, Governance, Presentations
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Security Information and Event Management (SIEM), Splunk, Threat Detection, System Monitoring, Cybersecurity, Security Management, Event Monitoring, Incident Response, Data Analysis Software, Information Management, Data Management, Data Storage, Configuration Management, User Interface (UI)
Beginner · Course · 1 - 4 Weeks

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