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: Extensible Markup Language (XML), Data Sharing, Interoperability, Information Architecture, Technical Documentation, Data Management, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Demand Planning, Customer Demand Planning, Supply Chain Planning, Production Planning, Forecasting, Time Series Analysis and Forecasting, Trend Analysis, Inventory Management System, Data Analysis, Predictive Modeling, R Programming, Data Visualization
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Service Recovery, De-escalation Techniques, Greeting Customers, Customer Complaint Resolution, Customer Service, Conflict Management, Client Services, Hospitality, Friendliness, Professionalism, Teamwork, Composure, Coordination, Customer experience improvement, Collaboration, Personalized Service, Customer Relationship Building, Communication, Empathy, Active Listening
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Data Science, Statistical Programming, R Programming, Statistical Machine Learning, Advanced Analytics, Dimensionality Reduction, Statistical Modeling, Statistical Analysis, Statistical Methods, Sampling (Statistics), Regression Analysis, Statistical Inference, Predictive Modeling, Statistics
Build toward a degree
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Design Thinking, Business Transformation, Process Design, Business Process, Human Centered Design, Business Solutions, Innovation, Creative Problem-Solving, Ideation, Creativity, Overcoming Obstacles, User Research, User Feedback, Empathy, Adaptability, Needs Assessment
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Data Visualization Software, Dashboard, Data Visualization, Interactive Data Visualization, Data Transformation, Tableau Software, Data Storytelling, Data Manipulation, Exploratory Data Analysis, Heat Maps, Scatter Plots, Data Analysis, Forecasting, Geospatial Mapping
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Quantitative Research, Data-Driven Decision-Making, Descriptive Statistics, Data Analysis, Statistical Reporting, Statistics, Research Design, Statistical Analysis, Microsoft Excel, Research Methodologies, Research, R Programming, Data Presentation, Surveys, Data Collection, Data Ethics
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Matplotlib, Linear Algebra, NumPy, Scientific Visualization, Machine Learning Algorithms, Pandas (Python Package), Seaborn, Data Science, Machine Learning, Data Analysis, Supervised Learning, Python Programming, Scikit Learn (Machine Learning Library), Jupyter, Data Manipulation, Regression Analysis, Data Structures, Software Installation
Beginner · Course · 1 - 3 Months

Skills you'll gain: TypeScript, Javascript, React.js, JavaScript Frameworks, Web Development Tools, Application Development, Web Development
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Project Scoping, Scope Management, Quality Management, Resource Planning, Project Risk Management, Stakeholder Management, Cost Management, Risk Management, Communication Strategies, Resource Allocation, Project Management, Cost Estimation, Project Management Life Cycle, Information Technology, Leadership Studies, Stakeholder Analysis, Timelines, Project Schedules, Human Resources Management and Planning, Procurement
Build toward a degree
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Sustainable Business, Corporate Sustainability, Sustainability Reporting, Environmental Social And Corporate Governance (ESG), Performance Measurement, Strategic Partnership, Business Strategies, Organizational Strategy, Business Ethics, Goal Setting, Key Performance Indicators (KPIs), Brand Strategy, Human Capital, Stakeholder Engagement, Employee Engagement, Advocacy, Systems Thinking, Supply Chain Management, Communication Strategies
Beginner · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Search Engine Marketing, Google Ads, Online Advertising, Search Engine Optimization, Marketing, Digital Marketing, Digital Advertising, Paid media, Campaign Management, Marketing Automation, Advertising Campaigns, Google Analytics, Advertising, Keyword Research, Target Audience, Bidding
Beginner · Course · 1 - 4 Weeks