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.

Simplilearn
Skills you'll gain: Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Web Content Accessibility Guidelines, Test Automation, Usability, Human Centered Design, Usability Testing, User Interface (UI), Interaction Design, UI/UX Strategy, Front-End Web Development, Software Testing, CI/CD, Semantic Web
Advanced · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Private Cloud, Virtual Machines, VMware ESX Servers, Cloud Infrastructure, Google Cloud Platform, Cloud Computing, Hybrid Cloud Computing, Virtualization, Cloud Services, Cloud Storage, Cloud Management, Virtual Private Networks (VPN), General Networking, Firewall
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Rmarkdown, Knitr, Exploratory Data Analysis, Dimensionality Reduction, Ggplot2, Plotly, Data Visualization, Interactive Data Visualization, Data Visualization Software, Statistical Visualization, Data Storytelling, Statistical Analysis, Generative AI, R Programming, Correlation Analysis, Data Analysis, Tidyverse (R Package), Scatter Plots, Descriptive Statistics, Data Cleansing
Beginner · Course · 1 - 3 Months

Skills you'll gain: Sales Enablement, Sales Management, Customer Analysis, Sales Strategy, Marketing, Target Market, Verbal Communication Skills, Sales Training, Sales Process, Sales, Business Transformation, Smart Goals, Return On Investment, Customer experience strategy (CX), Leadership, Organizational Structure
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Debugging, Development Environment, Open Source Technology, Integrated Development Environments, Computer Programming Tools, Software Development, Software Development Tools, Artificial Intelligence, Generative AI
Intermediate · Guided Project · Less Than 2 Hours

EDUCBA
Skills you'll gain: Extensible Markup Language (XML), Extensible Languages and XML, Data Validation, Document Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Full-Stack Web Development, Jest (JavaScript Testing Framework), Application Deployment, Web Development Tools, Unit Testing, JavaScript Frameworks, Data Structures, Back-End Web Development, Restful API, Application Programming Interface (API), Development Environment, Javascript, Browser Compatibility, Front-End Web Development
Beginner · Course · 1 - 3 Months

Skills you'll gain: Bootstrap (Front-End Framework), Responsive Web Design, UI Components, HTML and CSS, Application Deployment, Web Design and Development, Web Applications, Front-End Web Development, Interactive Design, Javascript, Cloud Hosting, User Interface (UI), Typography, Animations, Data Validation
Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Performance Management, Wireless Networks, Network Infrastructure, Wide Area Networks, Network Planning And Design, Network Routers, Local Area Networks, Network Protocols, Software-Defined Networking, Computer Networking, Network Switches, Business Priorities, Telecommunications, Enterprise Application Management, Service Level Agreement, Prioritization
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Unreal Engine, 3D Assets, Virtual Environment, Video Game Development, Computer Graphics
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: NoSQL, Database Systems, Database Theory, Databases, Database Management, Data Storage Technologies, Data-oriented programming, Performance Tuning, Scalability, Artificial Intelligence and Machine Learning (AI/ML), Algorithms
Intermediate · Course · 1 - 3 Months