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.

KodeKloud
Skills you'll gain: Amazon Web Services, Cloud Engineering, Site Reliability Engineering, Amazon Elastic Compute Cloud, Amazon CloudWatch, Cloud-Native Computing, Kubernetes, Systems Engineering, System Monitoring, Serverless Computing, Scalability, Application Performance Management, Performance Testing, Scenario Testing
Beginner · Course · 1 - 3 Months

Skills you'll gain: Object Oriented Programming (OOP), Javascript, Web Applications, UI Components, Application Programming Interface (API), Programming Principles, JSON, Front-End Web Development, Event-Driven Programming, Responsive Web Design, Data Storage, Debugging
Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: HVAC, Water Resource Management, Plant Operations and Management, Environmental Management Systems, Thermal Management, Environmental Monitoring, Electrical Power, Biology, Physics
Beginner · Course · 1 - 3 Months

Whizlabs
Skills you'll gain: Microsoft Azure, Azure Synapse Analytics, Data Integration, Cloud Storage, Data Lakes, Data Pipelines, Data Storage, Databricks, Microsoft SQL Servers, NoSQL, .NET Framework, Encryption, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Windows Servers, Hyper-V, Server Administration, Operating System Administration, Active Directory, Windows PowerShell, Dynamic Host Configuration Protocol (DHCP), Virtual Private Networks (VPN), Group Policy, Virtualization, Network Infrastructure, System Monitoring, Data Storage, Virtual Machines, Identity and Access Management, Network Security, Software Installation, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Rmarkdown, Knitr, Exploratory Data Analysis, Dimensionality Reduction, Ggplot2, Plotly, Data Visualization, Interactive Data Visualization, Data Visualization Software, Statistical Visualization, Data Storytelling, Statistical Analysis, Generative AI, R Programming, Correlation Analysis, Data Analysis, Tidyverse (R Package), Scatter Plots, Descriptive Statistics, Data Cleansing
Beginner · Course · 1 - 3 Months

Skills you'll gain: Cloud Computing Architecture, Data Import/Export, MySQL, AWS Identity and Access Management (IAM)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Sales Enablement, Sales Management, Customer Analysis, Sales Strategy, Marketing, Target Market, Verbal Communication Skills, Sales Training, Sales Process, Sales, Business Transformation, Smart Goals, Return On Investment, Customer experience strategy (CX), Leadership, Organizational Structure
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Operating System Administration, IT Automation, Data Storage Technologies, Hardening, Package and Software Management, Command-Line Interface
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, User Interface (UI), Web Applications, User Accounts, Front-End Web Development, User Interface and User Experience (UI/UX) Design, Javascript, Responsive Web Design, Authentications, Data Validation
Intermediate · Course · 1 - 4 Weeks
Coursera
Skills you'll gain: Deepseek, Responsible AI, LLM Application, Generative Model Architectures, AI Product Strategy, Application Deployment, Data Ethics, Case Studies, Prompt Engineering, Automation, Integration Testing, Process Optimization, Program Evaluation, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Server Side, Web Development, Web Scraping, Web Applications, Back-End Web Development, Integration Testing, Web Development Tools, Web Services, Extensible Markup Language (XML), Package and Software Management, Development Testing, Unit Testing, Scripting, Performance Tuning, Cross Platform Development, Hypertext Markup Language (HTML), Interoperability, Debugging
Mixed · Course · 1 - 4 Weeks