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.

Johns Hopkins University
Skills you'll gain: Network Analysis, R Programming, Statistical Analysis, Regression Analysis, Statistical Modeling, Statistical Methods, Combinatorics, Bayesian Network, Applied Machine Learning, Statistical Hypothesis Testing, Statistical Programming, Data Analysis, R (Software), Probability, Statistics, Probability Distribution, Probability & Statistics, Bayesian Statistics, Social Network Analysis, Simulations
Intermediate · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Software Documentation, Leaflet (Software), Data Wrangling, Data Preprocessing, Technical Documentation, Data Manipulation, Data Cleansing, Package and Software Management, R (Software), Data Visualization Software, Program Development, Code Review, Plot (Graphics), Ggplot2, R Programming, GitHub, Continuous Integration, Software Technical Review, Software Testing
★ 4 (44) · Intermediate · Course · 1 - 3 Months
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Functional Design, Programming Principles, Event-Driven Programming, Software Design Patterns, Data Structures, Simulations
★ 4.6 (11) · Intermediate · Course · 1 - 3 Months

National Taiwan University
Skills you'll gain: Exploratory Data Analysis, Regression Analysis, R Programming, Statistical Analysis, Statistical Programming, R (Software), Statistical Modeling, Business Analytics, Analytics, Data Analysis, Statistics, Statistical Methods, Predictive Modeling, Statistical Inference, Data Transformation, Estimation, Statistical Hypothesis Testing, Model Evaluation
★ 5 (6) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Transaction Processing, Hybrid Cloud Computing, COBOL (Programming Language), Mainframe Technologies, Mainframe Computing, IBM Cloud, Cloud Applications, Enterprise Application Management, Application Development, Application Programming Interface (API), Cloud API
★ 4.5 (17) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Software Design Patterns, Object Oriented Programming (OOP), Object Oriented Design, Programming Principles, Software Design, Algorithms, Software Architecture, Computer Programming, Python Programming, Model View Controller
★ 4.5 (40) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Debugging, Javascript, Software Development
★ 4.1 (15) · Beginner · Guided Project · Less Than 2 Hours

SkillsBooster Academy
Skills you'll gain: Prompt Engineering, Prompt Patterns, Responsible AI, Figma (Design Software), Design Reviews, AI literacy, AI Integrations, AI Workflows, Generative AI, Graphic and Visual Design, Design, Generative AI Agents, Visual Design, Digital Design, Design Thinking, Process Design, Collaborative Software, Design Elements And Principles, Interactive Design, Marketing Design
★ 4.4 (17) · 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: Cloud Engineering, Cloud Deployment, Cloud Solutions, Cloud Computing Architecture, Cloud Services, Database Management Systems, Public Cloud, Cloud Security, Data Import/Export, Load Balancing, Virtual Networking, Cloud Platforms, Data Mapping, User Provisioning, Security Management, Data Storage Technologies, Security Controls, Enterprise Architecture, Multi-Factor Authentication, Event Monitoring
★ 3.8 (9) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Angular, Development Environment, Integrated Development Environments, Program Development, Web Development Tools, JavaScript Frameworks, Code Reusability, Javascript, Front-End Web Development, Model View Controller, Web Development
★ 4.3 (21) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Computer Security Incident Management, Incident Management, Security Management, Digital Forensics, Security Controls, NIST 800-53, Disaster Recovery, Authorization (Computing), Continuous Monitoring, Change Control, Cybersecurity, Security Architecture Review, Threat Management, Event Monitoring, Risk Management, System Monitoring, Cyber Risk, Cyber Security Policies, Vulnerability Assessments, Configuration Management
★ 4.7 (50) · Intermediate · Specialization · 3 - 6 Months