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: Object Oriented Programming (OOP), Programming Principles, Computational Thinking, Application Development, Python Programming, Computer Programming, Development Environment, Integrated Development Environments, Software Design, Software Installation
Beginner · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: System Programming, Rust (Programming Language), Data Structures, Relational Databases, Other Programming Languages, Databases, Debugging, Programming Principles, Unit Testing, Application Development, Secure Coding, SQL, Object Oriented Programming (OOP), C++ (Programming Language), Interoperability, Software Development, File I/O, Command-Line Interface, Data Import/Export
Beginner · Specialization · 1 - 3 Months
Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Microsoft Power Platform, Dashboard, Data Modeling, Business Intelligence, Microsoft Excel, Microsoft Copilot, Data Integration, Interactive Data Visualization, Data-Driven Decision-Making, Performance Reporting, Data Transformation, Data Cleansing, ChatGPT
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Electrical Safety, Maintenance, Repair, and Facility Services, Safety Standards, Hardware Troubleshooting, Test Equipment, Electrical Systems, Basic Electrical Systems, High Voltage, Safety and Security, End User Training and Support, Sustainable Technologies, Transportation Operations, Emerging Technologies
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Middleware, Node.JS, Model View Controller, Development Environment, Application Frameworks, Application Development, Restful API, TypeScript, Web Applications, Web Development Tools, Application Programming Interface (API), Server Side, Network Routing, Javascript, Android Development, Dependency Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Test Script Development, Continuous Integration, Test Execution Engine, Test Tools, Automation, Scripting, Web Scraping, Hypertext Markup Language (HTML), Software Design Patterns, Development Environment, Integrated Development Environments, Debugging, Command-Line Interface, File I/O
Beginner · Specialization · 3 - 6 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: Computational Thinking, Algorithms, Graph Theory, Data Structures, Computer Programming, C++ (Programming Language), Object Oriented Programming (OOP)
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: SQL, Relational Databases, Query Languages, Databases, Stored Procedure, Data Manipulation, Database Management Systems, Data Access, Data Maintenance
Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: AI Security, Responsible AI, Incident Response, Data Ethics, Generative AI, LLM Application, Application Security, Large Language Modeling, Security Engineering, Threat Modeling, Cybersecurity, IT Security Architecture, Information Systems Security, Security Strategy, Artificial Intelligence, Machine Learning, Security Management, MLOps (Machine Learning Operations), Agentic systems, Ethical Standards And Conduct
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: TypeScript, Web Development Tools, Debugging, Javascript, Integrated Development Environments, Software Development
Beginner · Guided Project · Less Than 2 Hours

Simplilearn
Skills you'll gain: User Story, Agile Software Development, Agile Project Management, Backlogs, Scaled Agile Framework, Agile Methodology, Sprint Retrospectives, Sprint Planning, Change Management, Team Building, Kanban Principles, Project Management, Estimation, Prioritization
Beginner · Course · 1 - 4 Weeks