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.

Whizlabs
Skills you'll gain: Amazon Bedrock, Responsible AI, Retrieval-Augmented Generation, AWS SageMaker, AI Orchestration, AI Workflows, Generative AI, AI Security, Amazon CloudWatch, Artificial Intelligence, Model Evaluation, Prompt Engineering, Embeddings, Automation, Systems Integration
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Story, Backlogs, Scaled Agile Framework, Project Estimation, Sprint Planning, Agile Project Management, Agile Software Development, Scrum (Software Development), Sprint Retrospectives, Agile Methodology, Stakeholder Communications, Team Building, Agile Product Development, Jira (Software), Estimation, Planning, Project Management, Kanban Principles, Product Management, Prioritization
Beginner · Specialization · 3 - 6 Months

EDUCBA
Skills you'll gain: Scripting, Object Oriented Programming (OOP), Data Structures, Scripting Languages, Python Programming, Maintainability, Programming Principles, Development Environment, Software Installation, Virtual Environment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Software Design Patterns, Software Documentation, Testability, Development Testing, Package and Software Management
Advanced · Course · 3 - 6 Months

Board Infinity
Skills you'll gain: React Native, Mobile Development, Responsive Web Design, Cross Platform Development, iOS Development, User Interface (UI) Design, Android Development, Application Development, JavaScript Frameworks, Data Storage Technologies, Development Environment, Javascript, Data Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Programming Interface (API), Restful API, Web Services, Cloud Services, C# (Programming Language), Server Side, Application Development
Intermediate · Guided Project · Less Than 2 Hours

Universitat Politècnica de València
Skills you'll gain: Prompt Engineering, ChatGPT, Microsoft Copilot, Email Automation, Deepseek, Productivity Software, Education Software and Technology, Artificial Intelligence, Generative AI, Excel Macros, Productivity, Excel Formulas
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Software Design, IntelliJ IDEA, Object Oriented Programming (OOP), Java, Integrated Development Environments, File I/O, Data Structures, Command-Line Interface
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Logo Design, Adobe Illustrator, Adobe Creative Cloud, Graphic Design, System Configuration, Design Software, Knowledge of Apple Hardware, Creative Design, Adobe Photoshop, Graphics Software, Computer Hardware, Peripheral Devices
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Rmarkdown, Plot (Graphics), Ggplot2, Statistical Visualization, Box Plots, Scatter Plots, Data Visualization, Histogram, Descriptive Statistics, Data Visualization Software, Graphing, R Programming, Data Science
Beginner · Course · 1 - 3 Months

Skills you'll gain: Cyber Threat Intelligence, Threat Modeling, MITRE ATT&CK Framework, Threat Detection, Intelligence Collection and Analysis, Report Writing, Technical Communication, Cybersecurity, Data Storytelling, Verbal Communication Skills, Vulnerability Assessments, Incident Response, Risk Analysis, Communication, Infrastructure Security, Analysis, Stakeholder Communications
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Agile Project Management, Project Management, Project Coordination, Agile Methodology, Project Management Software, Project Management Life Cycle, Jira (Software), Project Scoping, Budget Management, Risk Management, Cost Estimation, Sprint Planning, Waterfall Methodology, Microsoft Teams
Intermediate · Course · 3 - 6 Months