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.

Packt
Skills you'll gain: React Redux, JavaScript Frameworks, Web Development Tools, Frontend Performance, Web Applications, Context Management, Data Store, Middleware, Programming Principles
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Gherkin (Scripting Language), Behavior-Driven Development, Cucumber (Software), Test Execution Engine, .NET Framework, User Story, Test Case, Test Script Development, Microsoft Visual Studio, Test Automation, C# (Programming Language), Acceptance Testing, Functional Requirement, Scenario Testing, Maintainability
Beginner · Course · 3 - 6 Months

Packt
Skills you'll gain: Ubuntu, Cybersecurity, Cyber Attacks, Microsoft Windows, Computer Security, Computer Security Awareness Training, Information Systems Security, Linux, Network Security, Cyber Security Policies, Virtualization, Linux Commands, Linux Administration, Data Ethics, Data Security, Virtualization and Virtual Machines, Hardening, Command-Line Interface, Operating System Administration, Virtual Machines
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, Bootstrap (Front-End Framework), Web Applications, UI Components, Full-Stack Web Development, Web Development Tools, Authentications, Front-End Web Development, HTML and CSS, Cascading Style Sheets (CSS), Authorization (Computing), Application Programming Interface (API), User Interface (UI), Javascript, Microsoft Azure, Network Routing, Event-Driven Programming, User Interface (UI) Design, Data Validation, Debugging
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Strategic Leadership, Leadership, Adaptability, Resilience, Teamwork, Team Building, Professional Development, Diversity and Inclusion, Business, Productivity, Personal Development, Problem Solving, Change Management, Self-Awareness, Decision Making
Beginner · Course · 1 - 3 Months

Skills you'll gain: GraphQL, API Design, Restful API, Application Programming Interface (API), Cloud API, ASP.NET, Authentications, Data Validation, .NET Framework, Authorization (Computing), C# (Programming Language), Serverless Computing, Software Documentation, Microsoft Azure, Software Architecture, Verification And Validation, Application Deployment, Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: 3D Modeling, Post-Production, Cinematography, Game Design, Video Game Development, Video Production, Augmented and Virtual Reality (AR/VR), File Management, Functional Design, Image Quality, Simulations, Aesthetics, Design Elements And Principles, Layout Design, Color Theory
Intermediate · Specialization · 3 - 6 Months

Northeastern University
Skills you'll gain: Algorithms, Bayesian Statistics, Theoretical Computer Science, Network Model, Pseudocode, Computational Thinking, Bayesian Network, Data Structures, Graph Theory, Machine Learning Algorithms, Classification Algorithms, Network Analysis, Probability, Probability & Statistics
Mixed · Course · 1 - 3 Months

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

Starweaver
Skills you'll gain: MITRE ATT&CK Framework, Cyber Operations, Threat Modeling, Cyber Security Strategy, Cyber Threat Intelligence, Penetration Testing, Cybersecurity, Exploitation techniques, AI Security, Threat Management, Vulnerability Assessments, Human Factors (Security), Security Awareness, Security Testing, Cyber Attacks, Network Security
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Web Applications, Javascript, Other Programming Languages, UI Components, Front-End Web Development, Web Development, Object Oriented Programming (OOP), Cascading Style Sheets (CSS), Programming Principles
Intermediate · Course · 1 - 4 Weeks

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