Java Basics courses can help you learn object-oriented programming, data types, control structures, and exception handling. You can build skills in writing efficient code, debugging, and using Java libraries to enhance functionality. Many courses introduce tools like Integrated Development Environments (IDEs) such as Eclipse or IntelliJ IDEA, which streamline coding and testing processes, along with version control systems like Git to manage code changes effectively.

Vanderbilt University
Skills you'll gain: JUnit, Unit Testing, Maintainability, Software Design Patterns, Software Testing, Test Automation, Integration Testing, Test Driven Development (TDD), Development Testing, Testability, Software Engineering, Test Tools, Secure Coding, Android Development, Application Security, Software Design, Mobile Security
★ 4.5 (297) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Test Driven Development (TDD), Gherkin (Scripting Language), Test Tools, Behavior-Driven Development, Test Script Development, Test Automation, Unit Testing, Software Testing, Development Testing, Test Case, Test Data, Code Coverage, Restful API, Mockups
★ 4.8 (244) · Intermediate · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Malware Protection, Network Monitoring, TCP/IP, Network Infrastructure, Network Protocols, Firewall, Computer Security, Network Analysis, Exploitation techniques, General Networking, Authorization (Computing), Web Applications, Security Controls, Identity and Access Management, Authentications
★ 4.8 (735) · Mixed · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Internet Of Things, Manufacturing Operations, Case Studies, Manufacturing Processes, Manufacturing and Production, Digital Transformation, Production Planning, Business Transformation, Technology Strategies, Cloud Services, Cloud Computing, Digital Assets, Technology Roadmaps, Emerging Technologies, Automation, Strategic Partnership, Operational Efficiency, Industrial Engineering, System Implementation, Cost Benefit Analysis
★ 4.5 (383) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: NoSQL, MongoDB, Database Development, Database Systems, Databases, Database Management Systems, Database Management, Database Software, Database Administration, Information Management, Apache Cassandra, Database Theory, Database Architecture and Administration, Distributed Computing, Query Languages, Data Modeling, IBM Cloud, Cloud Applications, Data Manipulation, JSON
★ 4.6 (380) · Beginner · Course · 1 - 3 Months

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
★ 4.7 (36) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Pandas (Python Package), Data Analysis, Exploratory Data Analysis, Data Manipulation, Jupyter, Matplotlib, Regression Analysis, Data Visualization, Programming Principles, Data Cleansing, Data Visualization Software, Python Programming, Scripting
★ 4.3 (244) · Beginner · Course · 1 - 3 Months

The State University of New York
Skills you'll gain: Electrical Systems, Electrical Power, Electric Power Systems, Power Electronics, Energy and Utilities, Electronic Components, Electrical Equipment, Survey Creation, Sustainable Design, System Requirements, Engineering Calculations, Physical Science, Estimation, Physics
★ 4.7 (473) · Intermediate · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Prompt Engineering, Generative AI Agents, AI Workflows, Prompt Patterns, Agentic Workflows, Agentic systems, Generative AI, AI Orchestration, AI literacy, Artificial Intelligence, Responsible AI, AI Integrations, Risking, Algorithms
★ 4.7 (161) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Electric Power Systems, Electrical Power, Energy and Utilities, Basic Electrical Systems, Systems Of Measurement, Sustainable Technologies, Case Studies, Reliability, Market Dynamics, Emerging Technologies, Scalability, Systems Integration, Capacity Management
★ 4.7 (303) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Medical History Documentation, Child Health, Childbirth, Airway Management, Pediatric First Aid, Hazardous Waste Operations And Emergency Response Standard (HAZWOPER), Maternal Health, Emergency Medical Services, Emergency Medicine, Pediatrics, Postpartum Care, Patient Transport, Respiratory Care, Prenatal Care, Obstetrics And Gynecology, Patient Evaluation, Patient Transfer Equipment, Environment Health And Safety, Health Assessment, Pathology
★ 4.8 (313) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Excel Macros, Microsoft Excel, Visual Basic (Programming Language), Productivity Software, Debugging, Spreadsheet Software, Business Process Automation, Automation, Strategic Decision-Making, Scripting, User Interface (UI), Programming Principles
★ 4.5 (264) · Beginner · Course · 1 - 4 Weeks