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: Docker (Software), Containerization, Application Deployment, Command-Line Interface, Development Environment, Nginx, Software Installation, Node.JS, Virtual Machines, React.js
★ 4.6 (36) · Beginner · Course · 1 - 3 Months

Knowledge Accelerators
Skills you'll gain: Microsoft PowerPoint, Microsoft Teams, Microsoft Excel, Spreadsheet Software, Microsoft Word, Document Management, Taking Meeting Minutes, Business Management, Business Communication
★ 4.1 (17) · Beginner · Course · Less Than 2 Hours

LearnQuest
Skills you'll gain: Unified Modeling Language, Object Oriented Programming (OOP), Object Oriented Design, Test Driven Development (TDD), Software Design Patterns, Software Design, Programming Principles, Program Development, Development Testing, Process Driven Development, Computer Programming, Software Development Methodologies, Distributed Computing
★ 4.5 (149) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Javascript, React.js, Debugging, Integrated Development Environments
★ 4.6 (23) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Kaizen Methodology, Process Optimization, Pareto Chart, Operational Efficiency, Project Management, Project Scoping
★ 4.8 (13) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Clinical Nursing, Basic Nursing Skills, Patient Observation, Respiratory Care, Patient-centered Care, Respiration, Emergency Response, Patient Communication, Patient Advocacy, Nursing Process, Nursing Care, Nursing Practices, Nursing, Communication, Anatomy, Patient Safety, Patient Education And Counseling, Infection Control, Health Care, Patient Evaluation
★ 4.5 (12) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Debugging, Object Oriented Design, JSON, Program Development, Data Structures, Code Reusability, Python Programming, Microsoft Visual Studio, Development Environment, Scripting, Maintainability, Integrated Development Environments, Package and Software Management, Authorization (Computing), Programming Principles, Computer Programming, Web Scraping, Application Programming Interface (API)
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Lean Six Sigma, Lean Methodologies, Statistical Hypothesis Testing, Six Sigma Methodology, Correlation Analysis, Kaizen Methodology, Process Improvement, Process Improvement and Optimization, Project Coordination, Project Design, Quality Improvement, Sampling (Statistics), Project Management Software, Milestones (Project Management), Project Management, Data Literacy, Statistical Process Controls, Statistical Methods, Business Process, Statistical Modeling
★ 4.8 (50) · Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications, Ajax, Front-End Web Development, Hypertext Markup Language (HTML)
★ 4.4 (20) · Intermediate · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Music History, World Music, Classical Music, Music, Music Theory, Performing Arts, Musical Composition, Art History
★ 4.5 (53) · Beginner · Course · 1 - 3 Months

JetBrains
Skills you'll gain: Object Oriented Design, File I/O, Data Structures, Python Programming, Programming Principles, Code Reusability, Computer Programming, Scripting, Data Processing, Package and Software Management, Code Review, Computational Logic, NumPy, Development Environment, Integrated Development Environments, Computational Thinking, Software Installation, Numerical Analysis
★ 4.6 (12) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Software Quality Assurance, Quality Assurance, Test Automation, Software Quality (SQA/SQC), Test Tools, Agile Software Development, Agile Product Development, Software Testing, Agile Methodology, Automation, Analysis, Collaboration
★ 4.9 (13) · Intermediate · Course · 1 - 4 Weeks