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.

Starweaver
Skills you'll gain: Stakeholder Engagement, Business Analysis, Business Systems Analysis, Organizational Change, Stakeholder Communications, Requirements Analysis, Stakeholder Analysis, Requirements Management, Change Management, Performance Analysis, Project Performance, Business Development, Quality Management
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Programming Principles, Web Development Tools, Javascript, Web Language
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Exploratory Data Analysis, Data Compilation, Correlation Analysis, Data Collection, Statistical Inference, Statistics, Statistical Methods, Statistical Modeling, Predictive Modeling, Data Analysis, Statistical Hypothesis Testing, Data-Driven Decision-Making, Regression Analysis, Statistical Analysis, Probability & Statistics, Statistical Visualization, Data Visualization
Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Spring Framework, Java, Dependency Analysis, Software Design Patterns, Maintainability, Object Oriented Programming (OOP), Extensible Markup Language (XML), Software Design, Testability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unsupervised Learning, Scikit Learn (Machine Learning Library), PyTorch (Machine Learning Library), Exploratory Data Analysis, Deep Learning, Microsoft Azure, Data Visualization, Regression Analysis, Predictive Modeling, Data Analysis, Image Analysis, Pandas (Python Package), Jupyter, Artificial Intelligence and Machine Learning (AI/ML), Classification And Regression Tree (CART), Data Science, MLOps (Machine Learning Operations), Machine Learning, Tensorflow, Artificial Neural Networks
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: JSON, Test Automation, Application Programming Interface (API), Restful API, Unit Testing, Software Testing, Test Case, Integration Testing, Functional Testing
Beginner · Guided Project · Less Than 2 Hours

University of Colorado System
Skills you'll gain: Patient-centered Care, Patient Education And Counseling, Patient Advocacy, Active Listening, Compassion, Communication, Empathy, Self-Awareness, Health Assessment, Care Coordination, Planning
Beginner · Course · 1 - 3 Months

Skills you'll gain: Natural Language Processing, Microsoft Azure, Computer Vision, No-Code Development, Machine Learning, Predictive Modeling, Artificial Intelligence, Responsible AI
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Unified Modeling Language, Unit Testing, Software Design, Software Engineering Tools, Software Engineering, Systems Design, Design, Development Testing, Data Ethics, Test Automation, Computer Programming Tools, Software Architecture, Software Development Methodologies, Dataflow
Intermediate · Course · 1 - 3 Months

The World Bank Group
Skills you'll gain: Climate Change Programs, Climate Change Adaptation, Climate Change Mitigation, Interactive Learning, Sustainable Development, Environment, Environmental Policy, Natural Resource Management, Environmental Science, Energy and Utilities, Water Resource Management, Scientific Methods, Policy Analysis, Cooperation, Collaboration, Policy Development
Beginner · Course · 1 - 4 Weeks

Packt
Skills you'll gain: LangChain, Prompt Engineering, LLM Application, LangGraph, Generative AI Agents, Agentic systems, Large Language Modeling, OpenAI, Data Processing, Artificial Intelligence and Machine Learning (AI/ML), Development Environment, Artificial Intelligence, AI Personalization, Responsible AI, Tool Calling, Text Mining, Query Languages, User Interface (UI), Application Development, Natural Language Processing
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Cloud Computing, Cloud Infrastructure, Cloud Services, JavaScript Frameworks, Back-End Web Development, DevOps, Full-Stack Web Development, OpenShift, Version Control, Cloud Development, CI/CD, Software Development, Cloud-Native Computing, Web Applications, Microservices, Containerization, Kubernetes, Web Development, Serverless Computing, Docker (Software)
Intermediate · Course · 1 - 4 Weeks