Java courses can help you learn object-oriented programming, data structures, exception handling, and multithreading concepts. 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: Penetration Testing, Cybersecurity, Metasploit, Cyber Attacks, Application Security, Exploitation techniques, Network Security, Security Awareness, Malware Protection, Vulnerability Assessments, Javascript
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, Cascading Style Sheets (CSS), Event-Driven Programming, User Experience Design, User Interface (UI), Front-End Web Development, Data Management, JavaScript Frameworks, Javascript, API Design, Data Validation, Real Time Data, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, Git (Version Control System), Front-End Web Development, Browser Compatibility, Mobile Development, Javascript, Animations, User Interface (UI), Web Development Tools, Web Content Accessibility Guidelines, Typography, Semantic Web, GitHub, Version Control, Application Deployment, Development Environment
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Web Development Tools, Data Structures, Javascript, Scripting, Scripting Languages, Programming Principles
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: TypeScript, React.js, UI Components, Javascript, Software Design Patterns
Advanced · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: Debugging, HTML and CSS, Web Development, Mobile Development, Database Application, Responsive Web Design, Real Time Data, User Interface (UI) Design, Secure Coding, Javascript, Data Storage Technologies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, Web Development, HTML and CSS, Front-End Web Development, Web Servers, Cascading Style Sheets (CSS), Web Applications, Server Side, Javascript, Middleware, Back-End Web Development
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Application Performance Management, Prometheus (Software), Network Monitoring, System Monitoring, Grafana, Performance Tuning, Event Monitoring, Performance Testing, Performance Management, Server Administration, Web Analytics and SEO, Javascript
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Structures, Javascript, Object Oriented Programming (OOP)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cloud Development, Microsoft Azure, Virtual Machines, Cloud Management, Infrastructure As A Service (IaaS), Virtualization, Application Deployment, Linux Administration, Linux, Web Applications, Node.JS, Javascript, MongoDB
Intermediate · Course · 1 - 3 Months

Edureka
Skills you'll gain: TypeScript, Javascript, Object Oriented Programming (OOP), Software Design Patterns, API Design, Programming Principles, Web Development Tools, Data Structures, Development Environment, Maintainability, Debugging
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React.js, UI Components, Jest (JavaScript Testing Framework), Web Development Tools, Front-End Web Development, Javascript
Intermediate · Course · 1 - 4 Weeks