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: Authentications, Cryptography, Encryption, .NET Framework, Open Web Application Security Project (OWASP), Application Security, Vulnerability Scanning, C# (Programming Language), Data Security, Data Validation, Cross Platform Development, Development Environment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Interaction Design, Computer Graphics
Beginner · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: B2B Sales, Consultative Selling, Stakeholder Engagement, Enterprise Sales, Performance Metric, Sales Presentations, Verbal Communication Skills, Oral Expression, Sales, Specialized Sales, Executive Presence, Sales Process, Sales Pipelines, Solution Sales Engineering, Sales Strategy, Technical Sales, Performance Analysis, Proposal Development, Customer Relationship Management (CRM) Software, Active Listening
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Programming Principles, Debugging, Computer Programming, Application Design, Computer Science, Maintainability, Object Oriented Programming (OOP), Software Development, Data Management, Algorithms, Software Architecture
Beginner · Course · 3 - 6 Months

Skills you'll gain: Responsive Web Design, Search Engine Optimization, Web Content Accessibility Guidelines, HTML and CSS, Web Design and Development, Web Analytics and SEO, Web Development, Javascript, Frontend Performance, Browser Compatibility
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Project Closure, Risk Mitigation, Project Risk Management, Project Planning, Business Communication
Beginner · Course · 1 - 4 Weeks

Northeastern University
Skills you'll gain: Web Design and Development, Responsive Web Design, HTML and CSS, Web Content Accessibility Guidelines, Front-End Web Development, Cascading Style Sheets (CSS), Web Development Tools, React.js, User Interface (UI), Javascript, Web Servers, Semantic Web, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Graph Theory, Network Analysis, Social Network Analysis, Combinatorics, Network Model, Mathematical Modeling, Data Structures, Transportation Operations, Image Analysis, Algorithms, Theoretical Computer Science, Artificial Intelligence and Machine Learning (AI/ML), Computational Thinking, Problem Solving
Intermediate · Course · 1 - 3 Months

University of Washington
Skills you'll gain: Responsive Web Design, Web Design, HTML and CSS, Web Design and Development, Cascading Style Sheets (CSS), Usability, Web Content Accessibility Guidelines, User Interface and User Experience (UI/UX) Design, User Experience, Javascript, Front-End Web Development, Hypertext Markup Language (HTML), GitHub
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Unified Modeling Language, Software Design Patterns, C++ (Programming Language), Software Architecture, Object Oriented Design, Software Design, Object Oriented Programming (OOP), Maintainability, Programming Principles
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Django (Web Framework), Model View Controller, Authentications, Chart.js, Data Import/Export, Full-Stack Web Development, Web Development, Data Modeling, Cascading Style Sheets (CSS), Responsive Web Design, Javascript, User Interface (UI), Development Environment
Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Network Performance Management, Network Monitoring, Performance Tuning, Virtual Networking, Google Cloud Platform, Performance Testing, Network Analysis, Hardware Architecture, Intranet
Intermediate · Project · Less Than 2 Hours