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.

EDUCBA
Skills you'll gain: Color Theory, Cascading Style Sheets (CSS), Typography, HTML and CSS, Web Design, Web Content Accessibility Guidelines, Semantic Web
Mixed · Course · 1 - 4 Weeks

Whizlabs
Skills you'll gain: Serverless Computing, Amazon S3, Amazon Elastic Compute Cloud, API Gateway, Cloud Security, Data Storage, Cloud Deployment, Application Deployment, File Systems, Data Encryption Standard
Intermediate · Course · 1 - 4 Weeks

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

Universitat Politècnica de València
Skills you'll gain: Building Information Modeling, Sustainable Development, Sustainable Technologies, Sustainable Architecture, Energy and Utilities, Sustainable Business, Sustainable Design, Building Design, Community Development, Environmental Engineering, Climate Change Adaptation, Materials science, Climate Change Mitigation, Case Studies
Intermediate · Course · 1 - 3 Months

Edureka
Skills you'll gain: AI Security, Responsible AI, Incident Response, Application Security, Security Engineering, Threat Modeling, Cybersecurity, MLOps (Machine Learning Operations), Information Systems Security, Security Strategy, Continuous Monitoring, Identity and Access Management, Cloud Security, Vulnerability Assessments, Threat Detection, Artificial Intelligence, Model Deployment, Machine Learning, Anomaly Detection
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Git (Version Control System), GitHub, Version Control, Jenkins, CI/CD, DevOps, Software Development Tools, Software Versioning, Microsoft Copilot, Software Development, Security Controls, Code Review
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Applications, Cloud Development, Application Deployment, Cloud Deployment, Google Cloud Platform, Application Performance Management, Infrastructure as Code (IaC), Development Environment, Performance Tuning, Containerization, System Monitoring, Debugging, Computer Programming
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Amazon DynamoDB, Amazon Web Services, NoSQL, Database Management, Database Design, Data Store, Development Environment, Command-Line Interface, JSON, Application Programming Interface (API), Software Development Tools, Performance Tuning, Scalability
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Ruby on Rails, Model View Controller, Ruby (Programming Language), Object-Relational Mapping, Test Automation, Restful API, Application Deployment, Web Applications, Web Development, Authentications, Development Environment, Relational Databases, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Content Performance Analysis, Content Strategy, Stakeholder Communications, User Experience, UI/UX Strategy, User Experience Design, User Research, User Interface and User Experience (UI/UX) Design, Test Planning, Benchmarking, Data-Driven Decision-Making, Competitive Analysis, Writing, Editing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Authentications, OAuth, Back-End Web Development, Event-Driven Programming, Database Management, Databases, Authorization (Computing), Redis, Secure Coding, Application Programming Interface (API), Restful API, Email Automation, Data Migration
Intermediate · Course · 3 - 6 Months

Skills you'll gain: PHP (Scripting Language), Web Applications, Server Side, Hypertext Markup Language (HTML), Web Development, Web Servers, Scripting, Scripting Languages, Development Environment, Programming Principles, Data Validation
Mixed · Course · 1 - 4 Weeks