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: Code Review, GitHub, Git (Version Control System), Version Control, Docker (Software), Software Development Tools, Continuous Integration, Containerization, Bioinformatics, Informatics, Automation, Data Analysis, R Programming
Advanced · Course · 1 - 3 Months

Skills you'll gain: Javascript, Event-Driven Programming, Web Development, HTML and CSS, Web Applications, Interactive Design, Debugging, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: NoSQL, Database Systems, Databases, Data Infrastructure, Data Storage Technologies, Scalability, Artificial Intelligence and Machine Learning (AI/ML), Algorithms
Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Cloud-Native Computing, Infrastructure as Code (IaC), Cloud Computing, Terraform, Cloud Storage, Amazon Web Services, Cloud Infrastructure, Cloud Computing Architecture, Amazon S3, Cloud Deployment, Amazon Elastic Compute Cloud, Database Management, Scalability, Virtual Machines, Databases, Virtualization, Command-Line Interface
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Risk Management Framework, Risk Analysis, Risk Management, Cybersecurity, Network Security, Incident Response, Cloud Security, Authentications, Business Continuity Planning, Application Security, IT Management, Security Management, Threat Modeling, Computer Security Incident Management, Threat Management, OSI Models, Business Risk Management, Disaster Recovery, Cryptography, Vulnerability Assessments
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Collaborative Software, Version Control, Integrated Development Environments, Debugging, Git (Version Control System), Application Deployment, Cloud Deployment, Cloud Development, GitHub, Development Environment, Application Development, Continuous Deployment, File Management, Software Development Tools, Secure Coding, Configuration Management, Cloud Storage
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, OpenAI API, Responsive Web Design, Application Programming Interface (API), Cascading Style Sheets (CSS), Javascript, Hypertext Markup Language (HTML), Application Development, Large Language Modeling, User Interface (UI), Figma (Design Software)
Intermediate · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Javascript, jQuery, Event-Driven Programming, Object Oriented Programming (OOP), JSON, Web Applications, Computer Programming, Web Development Tools, Debugging, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS)
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: AI Workflows, Technical Communication, AI Enablement, Model Deployment, Generative AI Agents, Data Integration, AI Orchestration, Reinforcement Learning, Artificial Intelligence and Machine Learning (AI/ML), Agentic systems, Responsible AI, Artificial Intelligence, Cloud Computing, Deep Learning, Data Visualization, Python Programming, Machine Learning, Data Engineering, Anomaly Detection, Statistical Analysis
Beginner · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Apple iOS, Apple Xcode, Swift Programming, Core Data (Software), iOS Development, Mobile Development, Secure Coding, User Interface (UI), Application Deployment, Scalability, User Interface (UI) Design, UI Components, Debugging, Data Persistence, Data Management, Model View Controller, Performance Tuning, Programming Principles, Application Programming Interface (API), Application Security
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Patient-centered Care, Clinical Supervision, Healthcare Ethics, Basic Patient Care, Dignity in Care, Patient Treatment, Patient Education And Counseling, Patient Safety, Patient Evaluation, Health Care, Ethical Standards And Conduct, Health Assessment, Informed Consent, Professionalism, Communication, Interpersonal Communications, Healthcare Industry Knowledge, Empathy, Decision Making, Critical Thinking and Problem Solving
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Ubuntu, System Configuration, Cloud Deployment
Beginner · Course · 1 - 4 Weeks