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: Network Security, Open Shortest Path First (OSPF), Network Performance Management, Network Monitoring, OSI Models, Firewall, Network Planning And Design, Network Protocols, System Configuration, Infrastructure as Code (IaC), Terraform
Beginner · Specialization · 3 - 6 Months
Duke University
Skills you'll gain: Data Ethics, Exploratory Data Analysis, Data-Driven Decision-Making, Statistical Modeling, Web Scraping, Ggplot2, Data Visualization Software, Predictive Modeling, Tidyverse (R Package), Data Visualization, Data Analysis, Regression Analysis, Responsible AI, Data Transformation, Statistical Methods, R Programming, Data Science, Data Wrangling, Data Cleansing, Version Control
Beginner · Specialization · 1 - 3 Months

Skillshare
Skills you'll gain: Adobe After Effects, Animations, Video Production, Post-Production, Video Editing, Motion Graphics, Storyboarding, Ideation, File Management, Content Creation, Timelines, Graphics Software, Creativity, Color Matching
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Containerization, Web Design, Restful API, User Interface (UI), Node.JS, MongoDB, Database Management, Databases, JavaScript Frameworks, Web Development, Web Development Tools, Back-End Web Development, Full-Stack Web Development, Application Development, Javascript, GitHub
Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Mathematical Modeling, Software Systems, Mechanical Engineering, Systems Analysis, Systems Engineering, Applied Mathematics, Differential Equations, Hardware Architecture, Verification And Validation, Linear Algebra
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Internet Of Things, Automation, Data Management, Systems Architecture, Hardware Architecture, Network Protocols, Interoperability, Information Systems Security, Integration Testing, Emerging Technologies, Communication Systems, Systems Design, Analytics, Real Time Data
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Spring Boot, Database Design, Object-Relational Mapping, Application Frameworks, Data Modeling, Database Development, Java Platform Enterprise Edition (J2EE), Application Development, Database Architecture and Administration, Requirements Analysis
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Dashboard, Data Visualization Software, Real Time Data, Data Processing, Node.JS, Data Analysis, Application Programming Interface (API), Web Development Tools, JSON, Javascript
Intermediate · Guided Project · Less Than 2 Hours

Nanjing University
Skills you'll gain: Social Studies, Socioeconomics, Economic Development, Social Sciences, Research, World History, Economics, Social Justice, Political Sciences
Mixed · Course · 1 - 3 Months

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

Skills you'll gain: Amazon Web Services, Database Design, Amazon CloudWatch, Amazon DynamoDB, Amazon Redshift, Data Migration, Database Architecture and Administration, Database Management, Disaster Recovery, Databases, Relational Databases, AWS Identity and Access Management (IAM), NoSQL, AWS CloudFormation, Cloud Security, Encryption, Amazon S3, Virtual Private Networks (VPN), Scalability, Performance Tuning
Beginner · Course · 1 - 3 Months

Emory University
Skills you'll gain: Rmarkdown, Collaborative Software, Technical Documentation, Document Management, Technical Writing, Data Sharing, R (Software), R Programming, YAML, Hypertext Markup Language (HTML), File Management, Cascading Style Sheets (CSS), Version Control
Beginner · Course · 1 - 3 Months