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.

Skills you'll gain: JSON, Data Structures, Algorithms, Web Development Tools, Javascript, Pseudocode, Development Environment, Integrated Development Environments, Computer Programming, Application Programming Interface (API), Debugging, HTML and CSS, Object Oriented Programming (OOP), Computational Thinking, Performance Tuning, Solution Design
Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Deepseek, Model Deployment, AI Enablement, LLM Application, Generative Model Architectures, Competitive Analysis, AI Product Strategy, AI Workflows, Application Deployment, Organizational Strategy, Data Ethics, Model Evaluation, Automation, Integration Testing, Cost Reduction, Process Optimization, Program Evaluation
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Apple iOS, Apple Xcode, Swift Programming, Mobile Development, User Interface (UI), UI Components, Model View Controller, Application Development, Responsive Web Design, Storyboarding
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Development, Application Design, Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: UI Components, Email Automation, Payment Systems, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Application Programming Interface (API), Web Development Tools, JavaScript Frameworks, User Interface (UI) Design, Application Deployment
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Pandas (Python Package), Databases, Data Pipelines, Data Access, Performance Tuning, Data Transformation, Data Structures, Data Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Validation, Maintainability, Javascript, Computational Thinking, Data Structures, Debugging, Performance Tuning, Web Development, Algorithms
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Succession Planning, Leadership, Leadership Development, Organizational Leadership, Business Ethics, Business Leadership, Leadership and Management, Intercultural Competence, Team Leadership, Creativity, Team Building, Teamwork, Communication, Cultural Sensitivity, Cultural Diversity, Employee Coaching, Influencing, Mentorship, People Management, Coaching
Mixed · Course · 1 - 4 Weeks

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

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

Skills you'll gain: Authentications, Hardening, Key Management, Data Security, Cloud Security, Security Management, Security Controls, Encryption, Authorization (Computing), Identity and Access Management, Data Management, Server Administration, System Configuration, Servers, Configuration Management, Database Management, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Search Engine Optimization, Web Content Accessibility Guidelines, HTML and CSS, Web Design and Development, Web Analytics and SEO, Web Development, Javascript, Frontend Performance, Browser Compatibility
Intermediate · Guided Project · Less Than 2 Hours