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.

University of Geneva
Skills you'll gain: Research Methodologies, Institutional Review Board (IRB), Research, Research Design, Qualitative Research, Surveys, Policy Analysis, Research, and Development, Community and Social Work, Ethical Standards And Conduct, Data Collection, Accountability, Case Studies, Informed Consent, Needs Assessment, Decision Making
★ 4.8 (153) · Beginner · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: AI Integrations, Data Ethics, Responsible AI, AI Workflows, AI literacy, Business Process Automation, Automation, ChatGPT, Computer Science, Analysis, Innovation, Decision Making, Natural Language Processing, Creative Problem-Solving, Business Planning, Business Strategy, Organizational Strategy
★ 4.7 (20) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Public Relations, Branding
★ 4.7 (115) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: HVAC, Building Services Engineering, Thermal Management, Mechanical Engineering, Engineering, System Requirements, Engineering Calculations, Energy and Utilities, Estimation, Environmental Issue
★ 4.3 (60) · Intermediate · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Data Governance, Accounting, Data Management, Internal Controls, Internal Auditing, Auditing, General Accounting, Financial Auditing, Fraud detection, Data Quality, Data Integrity, Accounting Records, Exploratory Data Analysis, Data Manipulation, Pandas (Python Package), Data Analysis, Analytics, GitHub, Python Programming, Natural Language Processing
★ 4.6 (86) · Intermediate · Course · 1 - 4 Weeks

Nanjing University
Skills you'll gain: Economics, Policy, and Social Studies, Economics, European History, World History, Social Sciences, Socioeconomics, Political Sciences, Liberal Arts, Sociology, Economic Development, Environmental Issue, Anthropology
★ 4.3 (65) · Mixed · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Electrical Power, Power Electronics, Electrical Systems, Electrical Equipment, Torque (Physics), Electronic Components, Electric Power Systems, Basic Electrical Systems, Electrical Engineering, Semiconductors, Engineering, Scientific, and Technical Instruments, Mechanical Engineering, Machine Controls, Electronic Systems, Plant Operations and Management, Electronics, Engineering Calculations, High Voltage, Energy and Utilities, Thermal Management
★ 4.4 (97) · Beginner · Specialization · 1 - 3 Months

Universiteit Leiden
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Regression Analysis, R Programming, Data Analysis, Statistical Analysis, Descriptive Analytics, R (Software), Descriptive Statistics, Statistical Methods, Sampling (Statistics), Analysis, Probability & Statistics, Data Ethics, Data Collection, Analytical Skills, Medical Privacy, Exploratory Data Analysis, Statistical Reporting, Logistic Regression
★ 4.6 (46) · Beginner · Course · 1 - 3 Months

Skills you'll gain: API Testing, Test Automation, Test Script Development, Test Tools, Application Programming Interface (API), Restful API, Software Testing, Code Reusability, Configuration Management, Java Programming, Maintainability
★ 4.3 (31) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Microsoft Azure, Serverless Computing, Security Strategy, Network Security, Firewall, Cloud Applications, Cloud Management, Distributed Denial-Of-Service (DDoS) Attacks, Cloud Services, System Monitoring, Cloud Security, Cloud Deployment, Application Security, Internet Of Things, Software Development Tools, Artificial Intelligence, Key Management
★ 4.7 (546) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Scatter Plots, Plot (Graphics), Data Visualization Software, Statistical Visualization, Heat Maps, R Programming, Graphing, Data Wrangling, Graphics Software, Graphic and Visual Design
★ 4.9 (133) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, CI/CD, Model View Controller, ASP.NET, Cloud Infrastructure, Continuous Deployment, Load Balancing, OAuth, Continuous Integration, Continuous Delivery, Cloud Computing, Cloud Applications, Cloud Deployment, Application Deployment, Cloud Computing Architecture, API Design, Web Applications, Web Development, .NET Framework, Microservices
★ 4.9 (172) · Intermediate · Specialization · 3 - 6 Months