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: Restful API, Web Services, Java Platform Enterprise Edition (J2EE), Software Design, Java, Application Programming Interface (API), API Design, JSON, Web Applications, Software Architecture
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Design Thinking, Business Transformation, Process Design, Business Process, Human Centered Design, Service Design, Innovation, Creative Problem-Solving, Ideation, Creativity, User Research, User Feedback, Empathy, Critical Thinking
Beginner · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Music History, World Music, Classical Music, Music, Music Theory, Music Performance, Musical Composition
Beginner · Course · 1 - 3 Months

Clemson University
Skills you'll gain: Responsible AI, Artificial Intelligence, Data Ethics, Artificial Intelligence and Machine Learning (AI/ML), Human Centered Design, Human Computer Interaction, Generative AI, Machine Learning, Model Evaluation, Ethical Standards And Conduct
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: 3D Assets, Generative AI, Prompt Engineering, Digital Design, Graphics Software, Creativity, Design and Product, Marketing Design
Beginner · Guided Project · Less Than 2 Hours

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

University of Washington
Skills you'll gain: Responsive Web Design, Web Design, GitHub, HTML and CSS, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Version Control, Web Design and Development, Usability, User Interface and User Experience (UI/UX) Design, User Experience, Javascript, Web Content Accessibility Guidelines, Browser Compatibility, User Story, Front-End Web Development, Web Development, Mobile Development, Semantic Web, Git (Version Control System)
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Selenium (Software), Test Automation, Software Testing, Test Script Development, Test Data, Test Tools, Browser Compatibility, Test Case, Java, Automation, Cascading Style Sheets (CSS), Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Workflow Management, Spreadsheet Software, Project Management Software, Process Design, Data Entry, Excel Formulas, Automation, Data Import/Export, Data Management, Document Management, Collaborative Software, User Accounts
Beginner · Course · 1 - 3 Months

Skills you'll gain: Digital Transformation, Business Transformation, Corporate Strategy, Business Strategy, Organizational Change, Technology Strategies, Case Studies, Predictive Modeling, Emerging Technologies, Innovation, Strategic Decision-Making
Beginner · Course · 1 - 3 Months

University of London
Skills you'll gain: Leadership and Management, Organizational Structure, Organizational Leadership, Music, Storytelling, Business Management, Leadership, Productivity, Workforce Management, Innovation, Writing and Editing, Employee Engagement, Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: React.js, JavaScript Frameworks, Data Persistence, Javascript, Context Management, Web Development
Intermediate · Guided Project · Less Than 2 Hours