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: Earned Value Management, Project Performance, Cost Management, Project Controls, Variance Analysis, Budget Management, Performance Metric, Project Estimation, Cost Estimation, Cost Control, Performance Analysis, Analysis, Forecasting, Performance Measurement, Issue Tracking
★ 4.9 (13) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Ruby (Programming Language), Object Oriented Programming (OOP), Debugging, Code Reusability, Development Environment, Integrated Development Environments, Computer Programming, Programming Principles, Apple Xcode, Computational Logic, Software Installation, Other Programming Languages, Computer Programming Tools, Microsoft Windows, Command-Line Interface
★ 4.6 (12) · Beginner · Course · 1 - 3 Months

Knowledge Accelerators
Skills you'll gain: Prompt Engineering, Responsible AI, Microsoft Copilot, Prompt Patterns, AI literacy, Microsoft 365, AI Enablement, Governance, Workflow Management, Generative AI Agents, Productivity Software, LLM Application, Agentic Workflows, Generative AI
Beginner · Course · Less Than 2 Hours

Edureka
Skills you'll gain: Memory Management, Other Programming Languages, Code Reusability, Programming Principles, Integrated Development Environments, Build Tools, Web Development, System Programming, Maintainability
★ 3.6 (18) · Beginner · Course · 1 - 4 Weeks

SkillsBooster Academy
Skills you'll gain: Project Closure, Project Management, Stakeholder Communications, Stakeholder Engagement, Team Leadership, Project Schedules, Team Building, Work Breakdown Structure, Stakeholder Management, Project Coordination, Project Planning, Team Management, Project Risk Management, Agile Project Management, Project Management Software, Leadership, Risk Management, Business Risk Management, Communication, Decision Making
★ 5 (6) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Statistical Inference, Statistical Programming, Regression Analysis, Logistic Regression, Statistical Methods, R Programming, Statistical Analysis, Statistical Modeling, R (Software), Predictive Modeling, Model Evaluation, Probability & Statistics, Statistical Hypothesis Testing, Probability Distribution
★ 4.4 (8) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Ansible, Puppet (Configuration Management Tool), Software-Defined Networking, Network Administration, Security Awareness, IT Automation, Chef (Configuration Management Tool), Virtual Private Networks (VPN), JSON, Authentications, Network Engineering, Computer Security Awareness Training, Network Infrastructure, Authorization (Computing), Identity and Access Management, Configuration Management, Cyber Security Policies, Remote Access Systems, Application Programming Interface (API)
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Data Visualization Software, Dashboard, Dashboard Creation, Data Visualization, Interactive Data Visualization, Data Transformation, Data Presentation, Tableau Software, Data Storytelling, Data Manipulation, Exploratory Data Analysis, Data Analysis
★ 3.8 (15) · Beginner · Course · 1 - 4 Weeks
Dartmouth College
Skills you'll gain: Liberal Arts, Psychology
★ 4.8 (11) · Mixed · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
★ 4.6 (25) · Intermediate · Course · 1 - 3 Months
Coursera
Skills you'll gain: Code Reusability, React.js, JavaScript Frameworks, Web Applications, UI Components, Application Development, User Interface (UI), Front-End Web Development, Javascript
★ 4 (12) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Model Evaluation, Convolutional Neural Networks, Model Training, Image Analysis, Predictive Modeling, Data Preprocessing, Deep Learning, Artificial Neural Networks, Computer Vision, Applied Machine Learning, Python Programming, Development Environment, Project Performance, AI Workflows, Project Implementation
★ 4.7 (19) · Mixed · Course · 1 - 4 Weeks