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.

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

Board Infinity
Skills you'll gain: Restful API, Database Design, API Design, MongoDB, Database Management, Authentications, Relational Databases, Performance Tuning, Databases, Authorization (Computing), NoSQL, SQL, Frontend Integration, Node.JS, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prototyping, 3D Modeling, 3D Assets, Design Strategies, Engineering Design Process, Computer-Aided Design, Manufacturing Processes, Technical Design, Design Software, Functional Design, Design, Materials science, Typography, Digital Design
Advanced · Course · 3 - 6 Months

Skills you'll gain: Active Directory, Security Management, Azure Active Directory
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Bootstrap (Front-End Framework), Responsive Web Design, UI Components, HTML and CSS, Web Design, User Interface (UI), Usability, Web Development
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Strategic Leadership, Change Management, Organizational Change, Leadership, Organizational Leadership, Visionary, Decision Making, Communication, Culture Transformation, Organizational Strategy, Emotional Intelligence, Conflict Management, Negotiation, Empathy, Business Strategy, Stakeholder Engagement
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: UI Components, Email Automation, Payment Systems, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Application Programming Interface (API), Web Development Tools, JavaScript Frameworks, User Interface (UI) Design, Application Deployment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, C# (Programming Language), Programming Principles, .NET Framework
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Validation, Maintainability, Javascript, Computational Thinking, Data Structures, Debugging, Performance Tuning, Web Development, Algorithms
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Debugging, Git (Version Control System), C# (Programming Language), .NET Framework, Development Environment, Integrated Development Environments, Program Development, Microsoft Development Tools, Software Development Tools, Configuration Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Blockchain, Development Environment, Web Development Tools, Virtual Machines, Software Testing, Software Development Tools, Data Storage, Debugging, Javascript, Cryptographic Protocols, Event-Driven Programming, System Design and Implementation, Transaction Processing, Payment Systems
Advanced · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Linux Administration, Linux Servers, Linux, Dynamic Host Configuration Protocol (DHCP), General Networking, Network Protocols, Network Infrastructure, TCP/IP, Network Administration, Ubuntu, Red Hat Enterprise Linux, Servers, System Configuration, Command-Line Interface, YAML
Intermediate · Course · 1 - 4 Weeks