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.

EDUCBA
Skills you'll gain: MySQL, Database Design, Python Programming, User Interface (UI) Design, UI Components, Database Application, Database Management, Software Design, Application Development, Data Access
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Event-Driven Programming, Graphics Software, Computer Graphics, Video Game Development, Computer Graphic Techniques, Development Environment, Debugging, Application Development
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Deployment, Application Deployment, ASP.NET, Microsoft Azure, Software Architecture, Authentications, Application Design, User Interface (UI), Application Development, Database Development, Maintainability, Web Servers, Debugging, Data Validation
Advanced · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Event-Driven Programming, User Interface (UI), Software Design, UI Components, User Interface (UI) Design, Application Design, Development Environment, Cross Platform Development, Application Development, Data Entry
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Solutions, Cloud Hosting, Cloud Deployment, Public Cloud, Cloud Computing Architecture, Cloud Management, Cloud Storage, Cost Management, Risk Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Product Management, Go To Market Strategy, Product Planning, User Experience, Market Analysis, Revenue Management, Product Lifecycle Management, UI/UX Strategy, Product Roadmaps, Product Design, Product Strategy, Sprint Retrospectives, User Interface and User Experience (UI/UX) Design, Marketing Analytics, Product Testing, Sprint Planning, A/B Testing, Driving engagement, Agile Methodology, Stakeholder Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Sustainable Business, Sales Territory Management, Corporate Sustainability, Solution Selling, Sales, Sales Strategy, Customer Relationship Building, Sales Process, Sales Prospecting, Market Opportunities, Information Technology, Technology Strategies, Business Acumen, Customer Relationship Management, AI Product Strategy, Complex Problem Solving, Business Relationship Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Threat Modeling, Cryptography, Cryptographic Protocols, Threat Management, Security Engineering, Network Security, Cyber Threat Intelligence, Data Security, Threat Detection, Vulnerability Assessments, Information Systems Security, Cyber Security Strategy, Encryption, Key Management, Network Protocols, Scripting, Regulatory Compliance, Financial Regulation, Scalability
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Javascript, JavaScript Frameworks, Node.JS, Event-Driven Programming, Application Programming Interface (API), Debugging
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Amazon DynamoDB, Amazon Web Services, NoSQL, Database Management, Database Design, Data Store, Development Environment, Command-Line Interface, JSON, Application Programming Interface (API), Software Development Tools, Performance Tuning, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Javascript, Event-Driven Programming, HTML and CSS, Application Deployment, Web Development, Full-Stack Web Development, Scripting, Programming Principles, GitHub, Application Development, Object Oriented Programming (OOP), User Interface (UI) Design, Data Validation, Data Structures
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Javascript, Restful API, Web Development
Intermediate · Course · 1 - 4 Weeks